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  <url>
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  <url>
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  <url>
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    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-01-wv-4841-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_4c_71cb5abc-6d70-468d-b9fd-96fd21721e3c.png?v=1776329278</image:loc>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:caption>Mercuric Thiocyanate Stock Solution, 4.17 g/L in Methanol - 4785-32</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_9debbe1c-83c1-4fca-900a-84328934b9db.png?v=1776329273</image:loc>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methanol-10-vv-hplc-grade-4815-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_4c_dce19f30-2ce6-4247-a76a-dda5b2c77bfd.png?v=1776329282</image:loc>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdovanadate-reagent-traacs-5208-5</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_20f_1795bc49-e70d-4e47-b41f-056f92c835bf.png?v=1776329277</image:loc>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methanesulfonic-acid-04-molar-4813-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_120a_558c058f-ba72-47e6-b56a-5da25b5c0fa7.png?v=1776329275</image:loc>
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      <image:caption>Methanesulfonic Acid, 0.4 Molar - 4813-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-ts-005-wv-alcoholic-4862-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120a_64594692-5d25-43b6-acdb-0fa8034f1c3a.png?v=1776329274</image:loc>
      <image:title>Methylene Blue TS, 0.05% (w/v) Alcoholic - 4862-4</image:title>
      <image:caption>Methylene Blue TS, 0.05% (w/v) Alcoholic - 4862-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/isopropyl-alcohol-10-vv-4207-5hp</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_5191b466-d2af-453d-be6b-6c7b09f17b81.png?v=1776329278</image:loc>
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      <image:caption>Isopropyl Alcohol, 10% (v/v) - 4207-5HP</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methanol-50-vv-4820-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_dcef666a-56bd-4079-9b1e-de5351bab825.png?v=1776329277</image:loc>
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    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-005-wv-4840-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Methylene Blue, 0.05% (w/v) - 4840-32</image:title>
      <image:caption>Methylene Blue, 0.05% (w/v) - 4840-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/oxalic-acid-ts-63-wv-5466-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Oxalic Acid TS, 6.3% (w/v) - 5466-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methanol-50-vv-4820-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_4a_4913b495-26b5-4cfd-930a-676cb20bc716.png?v=1776329280</image:loc>
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    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/oxalic-acid-5-wv-54655-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Oxalic Acid, 5% (w/v) - 5465.5-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/magnesium-chloride-1-mmhepes-50mm-r4467000-100a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Magnesium Chloride, 1 mM/HEPES 50mM - R4467000-100A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-reagent-for-surfactant-analysis-4900-5hp</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Methylene Blue Reagent, for Surfactant Analysis - 4900-5HP</image:title>
      <image:caption>Methylene Blue Reagent, for Surfactant Analysis - 4900-5HP</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mordant-black-11-triturate-r-1-ww-in-sodium-chloride-5215-100</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_fb3077ee-c00f-4c28-93c5-5e8d061daf9f.png?v=1776329278</image:loc>
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      <image:caption>Mordant Black 11 Triturate R, 1% (w/w) in Sodium Chloride - 5215-100</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-01-wv-4841-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500c_52f46211-635c-47c3-9ca7-0e9e73129c37.png?v=1776329277</image:loc>
      <image:title>Methylene Blue, 0.1% (w/v) - 4841-16</image:title>
      <image:caption>Methylene Blue, 0.1% (w/v) - 4841-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/magnesium-chloride-51-wv-4470-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_eb0413d5-e018-4876-88c5-3a20d68b2e1d.png?v=1776329283</image:loc>
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      <image:caption>Magnesium Chloride, 51% (w/v) - 4470-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdenum-standard-15-ppm-mo-r5196150-500n</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_c94ab50d-cff1-4434-98ce-c085c3633286.png?v=1776329280</image:loc>
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      <image:caption>Molybdenum Standard, 15 ppm Mo - R5196150-500N</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/3-methyl-2-benzothiazolinone-hydrazone-hydrochloride-ts-01-wv-in-90-vv-methanol-4838-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120a_b8018e8b-ffe1-41d4-b2b4-7e6c8132813d.png?v=1776329282</image:loc>
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    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/magnesium-sulfate-01-normal-005-molar-r4542000-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_3c6589a9-6d5f-440f-9fce-cd902c3caae8.png?v=1776329282</image:loc>
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      <image:caption>Magnesium Sulfate, 0.1 Normal (0.05 Molar) - R4542000-1A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methanol-50-vv-4820-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_dba226aa-93a8-4620-b789-d970a3fcc822.png?v=1776329279</image:loc>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/magnesium-chloride-0100-molar-m10-r4476000-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_51d9703a-29b5-4fbc-a291-dd33a4e7437d.png?v=1776329278</image:loc>
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      <image:caption>Magnesium Chloride, 0.100 Molar (M/10) - R4476000-1A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methanol-45-vv-r4817000-4a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_4a_f9593c64-a7d0-4446-8364-e5fa324c2886.png?v=1776329282</image:loc>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-20-vv-5326-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_cae9f2ef-cbd3-43a2-a5a1-c2176ad4e5e1.png?v=1776329282</image:loc>
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      <image:caption>Nitric Acid, 20% (v/v) - 5326-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-005-wv-4840-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_1485a035-31f3-4f96-a8ef-8032a62d7fc3.png?v=1776329278</image:loc>
      <image:title>Methylene Blue, 0.05% (w/v) - 4840-16</image:title>
      <image:caption>Methylene Blue, 0.05% (w/v) - 4840-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/isopropyl-alcohol-50-vv-42075-5</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methanol-acs-reagent-grade-absolute-4829-25</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Methanol, ACS Reagent Grade, Absolute - 4829-25</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-005-wv-4840-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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      <image:caption>Murexide Indicator, 0.1% (w/w) in Ammonium Chloride - R5219000-100A6</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mercuric-sulfate-ts-deniges-reagent-4779-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Mercuric Sulfate TS, Denigès&apos; Reagent - 4779-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/monochloroacetic-acid-buffer-for-carbamate-analysis-5210-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-health_1c_7651c47c-4734-4a8a-aa3a-be97d972f34f.png?v=1776329293</image:loc>
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      <image:caption>Monochloroacetic Acid Buffer, for Carbamate Analysis - 5210-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/magnesium-sulfate-ts-12-wv-4548-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-solution-ii-005-ml-1-drop-01-mgl-sulfide-4910-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Magnesium Sulfate, 2.25% (w/v) - 4530-1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/4-methylaminophenol-sulfate-rs-4839-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/oxalic-acid-5-wv-54655-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-dilute-r-125-gl-hno-5330-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-20-vv-in-methanol-r5326500-20f</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_1c_56c10d9d-80cd-4c90-b7ec-e093f23b4b4e.png?v=1776329294</image:loc>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/oxalic-acid-0100-normal-n10-00500-molar-m20-54711-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_91841924-1060-400e-ae78-bda6edefb6bc.png?v=1776329295</image:loc>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/murexide-indicator-02-ww-in-sodium-chloride-5220-500</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_20f_f0f08e9a-fb61-4326-9256-52ec35d3119a.png?v=1776329294</image:loc>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methylene-blue-solution-ii-005-ml-1-drop-01-mgl-sulfide-4910-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:caption>Perchloric Acid, 0.100 Normal (N/10) in Glacial Acetic Acid - 5515-1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-standard-1000-ppm-no-3045-ppm-n-5445-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitrite Standard, 1000 ppm NO?? (304.5 ppm N) - 5445-4</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-01-wv-5520-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>1,10-Phenanthroline, 0.1% (w/v) - 5520-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrification-inhibitor-r5443990-500c2</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_b559945a-814e-4c0a-93b4-d68ccc15be4c.png?v=1776329352</image:loc>
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      <image:caption>Nitrification Inhibitor - R5443990-500C2</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/michels-fixative-r5111000-100a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_a86779d6-2571-4372-bbea-c74eb1afca97.png?v=1776329350</image:loc>
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      <image:caption>Michel&apos;s Fixative - R5111000-100A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-10-ppm-n-122-ppm-nh-5450-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Ammonia Nitrogen Standard, 10 ppm N (12.2 ppm NH?) - 5450-1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-violet-indicator-002-wv-5100-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Methyl Violet Indicator, 0.02% (w/v) - 5100-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nital-etchant-2-vv-in-alcohol-r5314300-250a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_c14a7818-cb73-4515-8623-54e4e839f42a.png?v=1776329355</image:loc>
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      <image:caption>Nital Etchant, 2% (v/v) in Alcohol - R5314300-250A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/perchloric-acid-00500-normal-n20-in-glacial-acetic-acid-r5514050-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_48de1f85-45ed-46b0-bda6-fcbb33fc033b.png?v=1776329354</image:loc>
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      <image:caption>Perchloric Acid, 0.0500 Normal (N/20) in Glacial Acetic Acid - R5514050-500C</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/ninhydrin-035-wv-in-isopropyl-alcohol-r5309350-120c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Ninhydrin, 0.35% (w/v) in Isopropyl Alcohol - R5309350-120C</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrification-inhibitor-r5443990-50b1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_5e248e1f-31b4-4d77-aa13-5e35b1ebc8c5.png?v=1776329355</image:loc>
      <image:title>Nitrification Inhibitor - R5443990-50B1</image:title>
      <image:caption>Nitrification Inhibitor - R5443990-50B1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-red-methylene-blue-ts-alcoholic-mixed-indicator-5090-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_a41f4933-be56-4667-bd41-4c956c30815c.png?v=1776329354</image:loc>
      <image:title>Methyl Red-Methylene Blue TS, Alcoholic Mixed Indicator - 5090-16</image:title>
      <image:caption>Methyl Red-Methylene Blue TS, Alcoholic Mixed Indicator - 5090-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-red-methylene-blue-ts-alcoholic-mixed-indicator-5090-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120a_14ad456f-50be-4b4e-b25a-d3dcf36bd01e.png?v=1776329352</image:loc>
      <image:title>Methyl Red-Methylene Blue TS, Alcoholic Mixed Indicator - 5090-4</image:title>
      <image:caption>Methyl Red-Methylene Blue TS, Alcoholic Mixed Indicator - 5090-4</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-standard-1000-ppm-no-3045-ppm-n-5445-8</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_766e7ffc-33cb-4d39-9d1f-90456639a547.png?v=1776329357</image:loc>
      <image:title>Nitrite Standard, 1000 ppm NO?? (304.5 ppm N) - 5445-8</image:title>
      <image:caption>Nitrite Standard, 1000 ppm NO?? (304.5 ppm N) - 5445-8</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nital-etchant-2-vv-in-alcohol-r5314300-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1c_3e45d84e-2ed1-44af-b2d4-96b817925b78.png?v=1776329354</image:loc>
      <image:title>Nital Etchant, 2% (v/v) in Alcohol - R5314300-1C</image:title>
      <image:caption>Nital Etchant, 2% (v/v) in Alcohol - R5314300-1C</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-137-ww-r5314500-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1c_c9d18e29-3117-4b46-a12d-fe9174392af8.png?v=1776329353</image:loc>
      <image:title>Nitric acid, 1.37% (w/w) - R5314500-1C</image:title>
      <image:caption>Nitric acid, 1.37% (w/w) - R5314500-1C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-red-indicator-002-wv-5050-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_b92355b2-0185-45da-ae12-b873b8a1b0c3.png?v=1776329356</image:loc>
      <image:title>Methyl Red Indicator, 0.02% (w/v) - 5050-32</image:title>
      <image:caption>Methyl Red Indicator, 0.02% (w/v) - 5050-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ninhydrin-solution-r-5309-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500c_2a797fca-6b7b-4f80-be7b-e584e11d4068.png?v=1776329361</image:loc>
      <image:title>Ninhydrin Solution R - 5309-16</image:title>
      <image:caption>Ninhydrin Solution R - 5309-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-01-wv-alcoholic-55205-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500c_bf3f103e-02a0-468e-8862-5b9d634817ec.png?v=1776329357</image:loc>
      <image:title>1,10-Phenanthroline, 0.1% (w/v) Alcoholic - 5520.5-16</image:title>
      <image:caption>1,10-Phenanthroline, 0.1% (w/v) Alcoholic - 5520.5-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-red-02-wv-in-isopropyl-alcohol-r5165a00-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_ce9ebae6-ea0c-41ca-ad6e-0004aa9f4553.png?v=1776329359</image:loc>
      <image:title>Methyl Red, 0.2% (w/v) in Isopropyl Alcohol - R5165A00-500A</image:title>
      <image:caption>Methyl Red, 0.2% (w/v) in Isopropyl Alcohol - R5165A00-500A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ph-51-indicator-methyl-red-bromocresol-purple-r5565000-120a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120a_d00bc833-b080-4bc5-a9b1-503f5366c253.png?v=1776329360</image:loc>
      <image:title>pH 5.1 Indicator, Methyl Red-Bromocresol Purple - R5565000-120A</image:title>
      <image:caption>pH 5.1 Indicator, Methyl Red-Bromocresol Purple - R5565000-120A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-03-wv-5522-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_7bd2cefd-b281-401e-94b2-5a42f8da80d1.png?v=1776329355</image:loc>
      <image:title>1,10-Phenanthroline, 0.3% (w/v) - 5522-32</image:title>
      <image:caption>1,10-Phenanthroline, 0.3% (w/v) - 5522-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/periodic-acid-05-wv-in-80-vv-acetic-acid-r5518500-4c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_4c_5c5d511c-eb99-4fc6-a4f3-d7db3261b923.png?v=1776329358</image:loc>
      <image:title>Periodic Acid, 0.5% (w/v) in 80% (v/v) Acetic Acid - R5518500-4C</image:title>
      <image:caption>Periodic Acid, 0.5% (w/v) in 80% (v/v) Acetic Acid - R5518500-4C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-10-ppm-n-122-ppm-nh-5450-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_ead8d646-03b2-48d8-af30-227087073562.png?v=1776329356</image:loc>
      <image:title>Ammonia Nitrogen Standard, 10 ppm N (12.2 ppm NH?) - 5450-16</image:title>
      <image:caption>Ammonia Nitrogen Standard, 10 ppm N (12.2 ppm NH?) - 5450-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-05-aqueous-r5594000-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein, 0.5% Aqueous - R5594000-1C</image:title>
      <image:caption>Phenolphthalein, 0.5% Aqueous - R5594000-1C</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mixed-standard-500-ppm-alkalinity125-ppm-chloride-aqueous-5175-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Mixed Standard, 500 ppm Alkalinity/125 ppm Chloride, Aqueous - 5175-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-standard-100-ppm-no-5444-8</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_2324bc6b-e56f-4271-b16f-40efc264d674.png?v=1776329353</image:loc>
      <image:title>Nitrite Standard, 100 ppm NO?? - 5444-8</image:title>
      <image:caption>Nitrite Standard, 100 ppm NO?? - 5444-8</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mobile-phase-hexaneethyl-etherisopropyl-alcohol-r5181100-4c1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Mobile Phase: Hexane/Ethyl Ether/Isopropyl Alcohol - R5181100-4C1</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-violet-indicator-002-wv-5100-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_e1183fd1-8293-4ccc-99d5-17d7c6ed7259.png?v=1776329355</image:loc>
      <image:title>Methyl Violet Indicator, 0.02% (w/v) - 5100-32</image:title>
      <image:caption>Methyl Violet Indicator, 0.02% (w/v) - 5100-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/papanicolaou-stain-gills-modified-ea-formula-acidified-cytoplasmic-counterstain-for-use-with-hematoxylin-stains-5511-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_6004e1f6-ae6d-4484-a2b1-24c301969935.png?v=1776329356</image:loc>
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      <image:caption>Papanicolaou Stain, Gill&apos;s Modified EA Formula Acidified Cytoplasmic Counterstain for use with Hematoxylin Stains - 5511-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mixed-indicator-solution-methyl-red-methylene-blue-5164-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_740d1ec0-2f75-474d-8cf0-61fa6427d605.png?v=1776329357</image:loc>
      <image:title>Mixed Indicator Solution, Methyl Red-Methylene Blue - 5164-16</image:title>
      <image:caption>Mixed Indicator Solution, Methyl Red-Methylene Blue - 5164-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mixed-acid-10-vv-hydrofluoric-acid-10-vv-nitric-acid-r5151300-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:title>Mixed Acid, 10% (v/v) Hydrofluoric Acid / 10% (v/v) Nitric Acid - R5151300-1A</image:title>
      <image:caption>Mixed Acid, 10% (v/v) Hydrofluoric Acid / 10% (v/v) Nitric Acid - R5151300-1A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-2500-ppm-n-3040-ppm-nh-r5455300-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:caption>Ammonia Nitrogen Standard, 2500 ppm N (3040 ppm NH?) - R5455300-500A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-01-wv-in-methanol-r5595100-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein, 0.1% (w/v) in Methanol - R5595100-1A</image:title>
      <image:caption>Phenolphthalein, 0.1% (w/v) in Methanol - R5595100-1A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-03-vv-5308-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:caption>Nitric Acid, 0.3% (v/v) - 5308-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrate-nitrogen-standard-1000-ppm-n-4427-ppm-no-r5307900-120a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO??) - R5307900-120A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdate-reagent-5189-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Molybdate Reagent - 5189-1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-standard-1000-ppm-no-3045-ppm-n-5445-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitrite Standard, 1000 ppm NO?? (304.5 ppm N) - 5445-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-1-vv-r5313000-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitric Acid, 1% (v/v) - R5313000-1A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-01-wv-5520-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_e3e75fd9-7371-4184-a3af-27625b8c69cb.png?v=1776329359</image:loc>
      <image:title>1,10-Phenanthroline, 0.1% (w/v) - 5520-16</image:title>
      <image:caption>1,10-Phenanthroline, 0.1% (w/v) - 5520-16</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdate-reagent-taylor-type-12-wv-sodium-molybdate-in-49-vv-sulfuric-acid-5190-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_4a_bfb07bd2-a06a-47bd-a62d-c66fba2aa794.png?v=1776329361</image:loc>
      <image:title>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-1</image:title>
      <image:caption>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-03-vv-5308-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_3ff6e4d7-a22f-46e4-abc9-80240b068ad3.png?v=1776329363</image:loc>
      <image:title>Nitric Acid, 0.3% (v/v) - 5308-32</image:title>
      <image:caption>Nitric Acid, 0.3% (v/v) - 5308-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-01-wv-5520-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>1,10-Phenanthroline, 0.1% (w/v) - 5520-4</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-100-ppm-n-122-ppm-nh-5453-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Ammonia Nitrogen Standard, 100 ppm N (122 ppm NH?) - 5453-4</image:title>
      <image:caption>Ammonia Nitrogen Standard, 100 ppm N (122 ppm NH?) - 5453-4</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-008-wv-in-methanol-5595-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 0.08% (w/v) in Methanol - 5595-4</image:title>
      <image:caption>Phenolphthalein Indicator, 0.08% (w/v) in Methanol - 5595-4</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mixed-indicator-solution-methyl-red-methylene-blue-5164-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/perchloric-acid-0330-molar-aqueous-r5516330-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500a_a13992fc-8d12-453f-991e-2386993342de.png?v=1776329363</image:loc>
      <image:title>Perchloric Acid, 0.330 Molar, Aqueous - R5516330-500A</image:title>
      <image:caption>Perchloric Acid, 0.330 Molar, Aqueous - R5516330-500A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenanthroline-reagent-2-r5524000-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenanthroline Reagent 2 - R5524000-1C</image:title>
      <image:caption>Phenanthroline Reagent 2 - R5524000-1C</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ninhydrin-solution-r-5309-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120c_dff196f0-42e8-4f19-b327-6c4b95dfb33c.png?v=1776329366</image:loc>
      <image:title>Ninhydrin Solution R - 5309-4</image:title>
      <image:caption>Ninhydrin Solution R - 5309-4</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-1-vv-r5313000-4a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_4a_a0828940-a889-490a-90ae-2cb8bda0cb8c.png?v=1776329363</image:loc>
      <image:title>Nitric Acid, 1% (v/v) - R5313000-4A</image:title>
      <image:caption>Nitric Acid, 1% (v/v) - R5313000-4A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/perchloric-acid-10-in-methanol-r5517010-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Perchloric Acid, 10% in Methanol - R5517010-1C</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-02-vv-r5308200-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_1f2b1127-3f70-4378-8c04-2bb0e83a7614.png?v=1776329363</image:loc>
      <image:title>Nitric Acid, 0.2% v/v - R5308200-1A</image:title>
      <image:caption>Nitric Acid, 0.2% v/v - R5308200-1A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-2-vv-in-methanol-53142-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_77ea8e41-77a9-4404-808b-5104ac13f05d.png?v=1776329365</image:loc>
      <image:title>Nitric Acid, 2% (v/v) in Methanol - 5314.2-32</image:title>
      <image:caption>Nitric Acid, 2% (v/v) in Methanol - 5314.2-32</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-nitrogen-standard-1000-ppm-n-3285-ppm-no-r5444900-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500c_8c1655da-fa06-4e06-ad31-01c34213681f.png?v=1776329363</image:loc>
      <image:title>Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO??) - R5444900-500C</image:title>
      <image:caption>Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO??) - R5444900-500C</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdate-reagent-taylor-type-12-wv-sodium-molybdate-in-49-vv-sulfuric-acid-5190-25</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_10f_5fdeb1dc-0093-4a50-b9fd-a1fba0d2190d.png?v=1776329362</image:loc>
      <image:title>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-2.5</image:title>
      <image:caption>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-2.5</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-3-vv-r5316000-20f</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_20f_8a7b6f9f-d7ab-44bc-9d9e-53ef5a1ae5fb.png?v=1776329367</image:loc>
      <image:title>Nitric Acid, 3% (v/v) - R5316000-20F</image:title>
      <image:caption>Nitric Acid, 3% (v/v) - R5316000-20F</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrification-inhibitor-r5443990-125d2</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_94951b2b-f4b2-454b-b994-9c2b3bdcaaaf.png?v=1776329365</image:loc>
      <image:title>Nitrification Inhibitor - R5443990-125D2</image:title>
      <image:caption>Nitrification Inhibitor - R5443990-125D2</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phosphate-bufferacetonitrile-5050-r5181410-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1c_18701369-7551-4f78-a2c4-5bf50b182372.png?v=1776329362</image:loc>
      <image:title>Phosphate buffer/Acetonitrile, 50%/50% - R5181410-1C</image:title>
      <image:caption>Phosphate buffer/Acetonitrile, 50%/50% - R5181410-1C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/periodic-acid-06-wv-in-80-vv-acetic-acid-5519-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_4c_3dd1c943-f4d2-41e0-b3da-1400e2ebc139.png?v=1776329365</image:loc>
      <image:title>Periodic Acid, 0.6% (w/v) in 80% (v/v) Acetic Acid - 5519-1</image:title>
      <image:caption>Periodic Acid, 0.6% (w/v) in 80% (v/v) Acetic Acid - 5519-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mixed-icp-standard-5158-100</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_87f80bac-ad90-4a1d-8f60-803e79bc1785.png?v=1776329368</image:loc>
      <image:title>Mixed ICP Standard - 5158-100</image:title>
      <image:caption>Mixed ICP Standard - 5158-100</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-violet-indicator-002-wv-5100-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_120a_0732c188-8650-40fb-82ea-b4ce4d2964be.png?v=1776329363</image:loc>
      <image:title>Methyl Violet Indicator, 0.02% (w/v) - 5100-4</image:title>
      <image:caption>Methyl Violet Indicator, 0.02% (w/v) - 5100-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-standard-200-ppm-no-609-ppm-n-54442-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_120c_812fbaca-d56c-43b5-b607-c2896ba62598.png?v=1776329369</image:loc>
      <image:title>Nitrite Standard, 200 ppm NO?? (60.9 ppm N) - 5444.2-4</image:title>
      <image:caption>Nitrite Standard, 200 ppm NO?? (60.9 ppm N) - 5444.2-4</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdate-reagent-taylor-type-12-wv-sodium-molybdate-in-49-vv-sulfuric-acid-5190-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_1a_1650bb25-a540-4a17-8e9b-83ff93dede15.png?v=1776329362</image:loc>
      <image:title>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-32</image:title>
      <image:caption>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-32</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-yellow-indicator-02-wv-in-denatured-ethanol-r5106020-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500c_c2fd50c0-2b3d-4456-9c93-c8a616887faf.png?v=1776329365</image:loc>
      <image:title>Methyl Yellow Indicator, 0.2% (w/v) in Denatured Ethanol - R5106020-500C</image:title>
      <image:caption>Methyl Yellow Indicator, 0.2% (w/v) in Denatured Ethanol - R5106020-500C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nital-etchant-3-vv-in-reagent-alcohol-r5316200-25d1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_fbe08a4f-2fda-435c-959f-7b744fae354e.png?v=1776329366</image:loc>
      <image:title>Nital Etchant, 3% (v/v) in Reagent Alcohol - R5316200-2.5D1</image:title>
      <image:caption>Nital Etchant, 3% (v/v) in Reagent Alcohol - R5316200-2.5D1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-3-vv-r5316000-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500a_abcfd368-ccba-4baf-b986-510e0005fa3b.png?v=1776329364</image:loc>
      <image:title>Nitric Acid, 3% (v/v) - R5316000-500A</image:title>
      <image:caption>Nitric Acid, 3% (v/v) - R5316000-500A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-5318-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_1a_8b64e2c1-6609-4fa6-8544-2ba53394b327.png?v=1776329365</image:loc>
      <image:title>Nitric Acid, 5% (v/v) - 5318-32</image:title>
      <image:caption>Nitric Acid, 5% (v/v) - 5318-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrate-nitrogen-standard-1000-ppm-n-4427-ppm-no-5459-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_120a_3f099b24-738a-46ab-a920-6217a0c77a93.png?v=1776329367</image:loc>
      <image:title>Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO??) - 5459-4</image:title>
      <image:caption>Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO??) - 5459-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-3-vv-in-reagent-alcohol-r5316300-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_bb81da90-38e8-425c-9a29-46cfc41d948c.png?v=1776329366</image:loc>
      <image:title>Nitric Acid, 3% (v/v) in Reagent Alcohol - R5316300-500A</image:title>
      <image:caption>Nitric Acid, 3% (v/v) in Reagent Alcohol - R5316300-500A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-2-ww-r5315000-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_8db107e3-ff9e-42d2-9bc3-013075d77c7f.png?v=1776329364</image:loc>
      <image:title>Nitric Acid, 2% (w/w) - R5315000-500C</image:title>
      <image:caption>Nitric Acid, 2% (w/w) - R5315000-500C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/perchloric-acid-0100-molar-m10-volumetric-solution-ep-3003900-r5515300-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_d0bf7fcf-f386-4056-9d01-31645fb78916.png?v=1776329373</image:loc>
      <image:title>Perchloric Acid, 0.100 Molar (M/10) Volumetric Solution, EP 3003900 - R5515300-500C</image:title>
      <image:caption>Perchloric Acid, 0.100 Molar (M/10) Volumetric Solution, EP 3003900 - R5515300-500C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-nitrogen-standard-1000-ppm-n-3285-ppm-no-5461-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_121f2347-fa0d-45b1-826a-9ec9550b0194.png?v=1776329366</image:loc>
      <image:title>Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO??) - 5461-16</image:title>
      <image:caption>Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO??) - 5461-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mobile-phase-b-acetonitrile-ethanol-methanol-9055-r5181300-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1c_dc23c300-900b-472c-b21d-92933a4f3fce.png?v=1776329366</image:loc>
      <image:title>Mobile Phase B Acetonitrile / Ethanol / Methanol, 90:5:5 - R5181300-1C</image:title>
      <image:caption>Mobile Phase B Acetonitrile / Ethanol / Methanol, 90:5:5 - R5181300-1C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mobile-phase-hexaneethyl-etherisopropyl-alcohol-r5181100-4c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_4c_40171c03-30bf-4d0e-878b-82c25ba18def.png?v=1776329367</image:loc>
      <image:title>Mobile Phase: Hexane/Ethyl Ether/Isopropyl Alcohol - R5181100-4C</image:title>
      <image:caption>Mobile Phase: Hexane/Ethyl Ether/Isopropyl Alcohol - R5181100-4C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-2-ww-r5315000-10f</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_10f_d164a48b-451f-4a63-a382-a3d0c2ff2756.png?v=1776329366</image:loc>
      <image:title>Nitric Acid, 2% (w/w) - R5315000-10F</image:title>
      <image:caption>Nitric Acid, 2% (w/w) - R5315000-10F</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/5-mm-sodium-phosphate-5vv-acetonitrile-ph-300-r5181400-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1c_e034fda1-047a-4fbb-b4f5-b0fe11a384ca.png?v=1776329365</image:loc>
      <image:title>5 mM Sodium Phosphate, 5%v/v Acetonitrile, pH 3.00 - R5181400-1C</image:title>
      <image:caption>5 mM Sodium Phosphate, 5%v/v Acetonitrile, pH 3.00 - R5181400-1C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-50-ppm-n-608-ppm-nh-5452-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_4a_2d727f49-8aa7-4fe5-9d95-8cfd10dc2993.png?v=1776329366</image:loc>
      <image:title>Ammonia Nitrogen Standard, 50 ppm N (60.8 ppm NH?) - 5452-1</image:title>
      <image:caption>Ammonia Nitrogen Standard, 50 ppm N (60.8 ppm NH?) - 5452-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-1000-ppm-n-1216-ppm-nh-5455-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_120a_eeb728bb-aab9-4b50-b7ca-401ae9d5e90f.png?v=1776329366</image:loc>
      <image:title>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-4</image:title>
      <image:caption>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-1000-ppm-n-1216-ppm-nh-5455-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_95e6c767-faa9-4ffc-86ff-e5764ffe5068.png?v=1776329371</image:loc>
      <image:title>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-32</image:title>
      <image:caption>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/molybdate-reagent-taylor-type-12-wv-sodium-molybdate-in-49-vv-sulfuric-acid-5190-5</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_20f_9bdeed62-65ae-4832-be4a-8d108b5b2cab.png?v=1776329367</image:loc>
      <image:title>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-5</image:title>
      <image:caption>Molybdate Reagent, Taylor Type, 1.2% (w/v) Sodium Molybdate in 4.9% (v/v) Sulfuric Acid - 5190-5</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-05-wv-in-50-vv-alcohol-neutralized-5600-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_d47e3461-4949-4e2f-8d9c-be3092c85932.png?v=1776329368</image:loc>
      <image:title>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-32</image:title>
      <image:caption>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-1000-ppm-n-1216-ppm-nh-5455-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_52664837-69d1-4926-b3ca-c90592287072.png?v=1776329374</image:loc>
      <image:title>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-16</image:title>
      <image:caption>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-5318-5</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_20f_3ed68ff8-7959-4acb-aed9-642e206088ea.png?v=1776329371</image:loc>
      <image:title>Nitric Acid, 5% (v/v) - 5318-5</image:title>
      <image:caption>Nitric Acid, 5% (v/v) - 5318-5</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/mixed-acid-solution-r5147000-1c1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_9609acb5-149c-46fa-aa45-1bd0b0e97b11.png?v=1776329370</image:loc>
      <image:title>Mixed Acid Solution - R5147000-1C1</image:title>
      <image:caption>Mixed Acid Solution - R5147000-1C1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/modified-davidsons-fixative-ii-5187-55</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-55e_a28f0ae2-0c34-4055-91b9-7491ab3fa1f2.png?v=1776329370</image:loc>
      <image:title>Modified Davidson&apos;s Fixative II - 5187-55</image:title>
      <image:caption>Modified Davidson&apos;s Fixative II - 5187-55</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-100-ppm-n-122-ppm-nh-5453-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_0d35b844-ff7a-4f04-aa4d-7f736259bc95.png?v=1776329368</image:loc>
      <image:title>Ammonia Nitrogen Standard, 100 ppm N (122 ppm NH?) - 5453-16</image:title>
      <image:caption>Ammonia Nitrogen Standard, 100 ppm N (122 ppm NH?) - 5453-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-in-denatured-ethanol-53181-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_d098c23b-556a-49d9-bca4-9499eeddfcb1.png?v=1776329375</image:loc>
      <image:title>Nitric Acid, 5% (v/v) in denatured Ethanol - 5318.1-32</image:title>
      <image:caption>Nitric Acid, 5% (v/v) in denatured Ethanol - 5318.1-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-008-wv-in-methanol-5595-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_1feec470-004a-469f-bf96-592feccf78ee.png?v=1776329377</image:loc>
      <image:title>Phenolphthalein Indicator, 0.08% (w/v) in Methanol - 5595-16</image:title>
      <image:caption>Phenolphthalein Indicator, 0.08% (w/v) in Methanol - 5595-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-10-vv-5320-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500a_96a9eb3f-8f95-43b3-a4f3-806c5d6da064.png?v=1776329367</image:loc>
      <image:title>Nitric Acid, 10% (v/v) - 5320-16</image:title>
      <image:caption>Nitric Acid, 10% (v/v) - 5320-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-5318-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500a_e2e3e998-7729-4f90-bab5-7980ac22cfc0.png?v=1776329373</image:loc>
      <image:title>Nitric Acid, 5% (v/v) - 5318-16</image:title>
      <image:caption>Nitric Acid, 5% (v/v) - 5318-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nonaqueous-buffer-stock-solution-a-for-acid-number-of-petroleum-products-5462-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500c_5cc2e0d8-ba9e-48f4-9ef5-a74e004c5c0c.png?v=1776329373</image:loc>
      <image:title>Nonaqueous Buffer Stock Solution A, for Acid Number of Petroleum Products - 5462-16</image:title>
      <image:caption>Nonaqueous Buffer Stock Solution A, for Acid Number of Petroleum Products - 5462-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-solution-r-01-wv-in-80-vv-alcohol-5598-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_62a22a2b-e224-4a3d-ad5c-c9c0e3cbc404.png?v=1776329370</image:loc>
      <image:title>Phenolphthalein Solution R, 0.1% (w/v) in 80% (v/v) Alcohol - 5598-32</image:title>
      <image:caption>Phenolphthalein Solution R, 0.1% (w/v) in 80% (v/v) Alcohol - 5598-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-05-aqueous-r5594000-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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    <image:image>
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      <image:title>Phenolphthalein, 0.5% Aqueous - R5594000-500C</image:title>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-05-wv-in-50-vv-alcohol-neutralized-5600-4</loc>
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      <image:title>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-4</image:title>
      <image:caption>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-4</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-3-vv-r5316000-4a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitric Acid, 3% (v/v) - R5316000-4A</image:title>
      <image:caption>Nitric Acid, 3% (v/v) - R5316000-4A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-01-wv-alcoholic-55205-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1c_7377c4f0-e6be-4f73-afe4-bbded7e167dd.png?v=1776329371</image:loc>
      <image:title>1,10-Phenanthroline, 0.1% (w/v) Alcoholic - 5520.5-32</image:title>
      <image:caption>1,10-Phenanthroline, 0.1% (w/v) Alcoholic - 5520.5-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/methyl-red-indicator-002-wv-in-methanol-5080-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Methyl Red Indicator, 0.02% (w/v) in Methanol - 5080-32</image:title>
      <image:caption>Methyl Red Indicator, 0.02% (w/v) in Methanol - 5080-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/110-phenanthroline-03-wv-5522-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_41a6c537-25ca-48c8-a3da-495dd02ea17e.png?v=1776329374</image:loc>
      <image:title>1,10-Phenanthroline, 0.3% (w/v) - 5522-16</image:title>
      <image:caption>1,10-Phenanthroline, 0.3% (w/v) - 5522-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-58-vv-alcohol-r5614000-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_8f0792b3-7d9d-44b0-8872-54ca16636fc7.png?v=1776329376</image:loc>
      <image:title>Phenolphthalein, 1% (w/v) in 58% (v/v) Alcohol - R5614000-1A</image:title>
      <image:caption>Phenolphthalein, 1% (w/v) in 58% (v/v) Alcohol - R5614000-1A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-02-wv-in-denatured-ethanol-r5597000-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_8eaa664b-7417-4c33-97b7-e36286791c25.png?v=1776329376</image:loc>
      <image:title>Phenolphthalein, 0.2% (w/v) in denatured Ethanol - R5597000-500A</image:title>
      <image:caption>Phenolphthalein, 0.2% (w/v) in denatured Ethanol - R5597000-500A</image:caption>
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  </url>
  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Phenolphthalein, 0.5% (w/v) in Methanol - R5595500-500A</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Ammonia Nitrogen Standard, 500 ppm N (608 ppm NH?) - R5454000-500A</image:title>
      <image:caption>Ammonia Nitrogen Standard, 500 ppm N (608 ppm NH?) - R5454000-500A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/ammonia-nitrogen-standard-1000-ppm-n-1216-ppm-nh-5455-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-1</image:title>
      <image:caption>Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH?) - 5455-1</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/modified-davidsons-fixative-ii-5187-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_cc10660a-433a-4bd4-80fb-ebe1d385f865.png?v=1776329376</image:loc>
      <image:title>Modified Davidson&apos;s Fixative II - 5187-16</image:title>
      <image:caption>Modified Davidson&apos;s Fixative II - 5187-16</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nital Etchant, 3% (v/v) in Reagent Alcohol - R5316200-1C</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitric Acid, 10% (w/v) - R5322000-2.5D</image:title>
      <image:caption>Nitric Acid, 10% (w/v) - R5322000-2.5D</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrate-standard-1000-ppm-no-226-ppm-n-5458-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitrate Standard, 1000 ppm NO?? (226 ppm N) - 5458-4</image:title>
      <image:caption>Nitrate Standard, 1000 ppm NO?? (226 ppm N) - 5458-4</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_120a_90ebae57-67a2-4d96-a608-284457f2c570.png?v=1776329378</image:loc>
      <image:title>Ammonia Nitrogen Standard, 10 ppm N (12.2 ppm NH?) - 5450-4</image:title>
      <image:caption>Ammonia Nitrogen Standard, 10 ppm N (12.2 ppm NH?) - 5450-4</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-4-vv-in-methanol-r5318500-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitric Acid, 4% (v/v) in Methanol - R5318500-1A</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitrate Nitrogen Standard, 100 ppm N (442.7 ppm NO??) - 5457-4</image:title>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-10-vv-5320-5pt</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitric Acid, 5% (v/v) in Methanol - R5318200-200A</image:caption>
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  <url>
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      <image:title>Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO??) - 5459-32</image:title>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-nitrogen-standard-250-ppm-n-821-ppm-no-5460-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitrite Nitrogen Standard, 250 ppm N (821 ppm NO??) - 5460-16</image:title>
      <image:caption>Nitrite Nitrogen Standard, 250 ppm N (821 ppm NO??) - 5460-16</image:caption>
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  <url>
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      <image:title>Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO??) - 5461-4</image:title>
      <image:caption>Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO??) - 5461-4</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:title>Nital Etchant, 10% (v/v) Nitric Acid in Reagent Alcohol - R5323000-20E1</image:title>
      <image:caption>Nital Etchant, 10% (v/v) Nitric Acid in Reagent Alcohol - R5323000-20E1</image:caption>
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  <url>
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      <image:title>Nitrate Nitrogen Standard, 10 ppm N (44.27 ppm NO??) - 5456-4</image:title>
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  <url>
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      <image:caption>Phenolphthalein Solution R, 0.1% (w/v) in 80% (v/v) Alcohol - 5598-16</image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_20f_bc9f0321-802f-441b-b261-a4d163becca7.png?v=1776329382</image:loc>
      <image:title>Phenolphthalein, 0.1% (w/v) in 50% (v/v) Methanol - R5604000-20F</image:title>
      <image:caption>Phenolphthalein, 0.1% (w/v) in 50% (v/v) Methanol - R5604000-20F</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-5318-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_4a_93eca927-bfa5-4efa-9ee5-f19e873bc415.png?v=1776329378</image:loc>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Ammonia Nitrogen Standard, 10,000 ppm N (12,160 ppm NH?) - R5455900-500A</image:caption>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-4</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-4</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-30-vv-in-methanol-r5320300-1c1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_94aee80e-7106-4950-b13e-26e3cb4d3bb3.png?v=1776329383</image:loc>
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      <image:caption>Nitric Acid, 30% (v/v) in Methanol - R5320300-1C1</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-50-vv-isopropyl-alcohol-neutralized-5625-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Phenolphthalein, 1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - 5625-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-nitrogen-standard-250-ppm-n-821-ppm-no-5460-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitrite Nitrogen Standard, 250 ppm N (821 ppm NO??) - 5460-4</image:title>
      <image:caption>Nitrite Nitrogen Standard, 250 ppm N (821 ppm NO??) - 5460-4</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_39bbe627-9247-4be8-8517-2932bc7b9e29.png?v=1776329380</image:loc>
      <image:title>Nonionic Detergent Cleanser - 5464.2-32</image:title>
      <image:caption>Nonionic Detergent Cleanser - 5464.2-32</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_d5caae89-1109-43c2-bb34-5a8caf9b935b.png?v=1776329384</image:loc>
      <image:title>Nitric Acid, 30% (v/v) in Methanol - R5320300-1A</image:title>
      <image:caption>Nitric Acid, 30% (v/v) in Methanol - R5320300-1A</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized - 5620-4</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized - 5620-4</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-1</image:title>
      <image:caption>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-1</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nonaqueous Buffer Stock Solution B for Acid Number and Neutralization Number of Petroleum Products - 5463-32</image:title>
      <image:caption>Nonaqueous Buffer Stock Solution B for Acid Number and Neutralization Number of Petroleum Products - 5463-32</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO??) - 5459-16</image:title>
      <image:caption>Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO??) - 5459-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-1-wv-in-methanol-neutralized-5621-5</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in Methanol, Neutralized - 5621-5</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in Methanol, Neutralized - 5621-5</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-1-wv-in-70-vv-alcohol-neutralized-5618-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-1</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-50-vv-isopropyl-alcohol-neutralized-5625-60</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein, 1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - 5625-60</image:title>
      <image:caption>Phenolphthalein, 1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - 5625-60</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nonaqueous-buffer-stock-solution-b-for-acid-number-and-neutralization-number-of-petroleum-products-5463-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500c_ab8c253b-4bf5-40a7-9317-7a58488c801c.png?v=1776329387</image:loc>
      <image:title>Nonaqueous Buffer Stock Solution B for Acid Number and Neutralization Number of Petroleum Products - 5463-16</image:title>
      <image:caption>Nonaqueous Buffer Stock Solution B for Acid Number and Neutralization Number of Petroleum Products - 5463-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-1-wv-in-methanol-neutralized-5621-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in Methanol, Neutralized - 5621-32</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in Methanol, Neutralized - 5621-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-10-vv-5320-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-1-wv-in-95-vv-alcohol-neutralized-5620-32</loc>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized - 5620-32</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized - 5620-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-200-mv-vs-agagcl-4m-kcl-sat-with-agcl-filling-solution-54645-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:caption>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-32</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:title>Nitrite Nitrogen Standard, 100 ppm N (328.5 ppm NO??) - 5461.1-32</image:title>
      <image:caption>Nitrite Nitrogen Standard, 100 ppm N (328.5 ppm NO??) - 5461.1-32</image:caption>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized - 5620-1</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized - 5620-1</image:caption>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-32</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-32</image:caption>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitric Acid, 5% (v/v) in Methanol - R5318200-2.5D</image:title>
      <image:caption>Nitric Acid, 5% (v/v) in Methanol - R5318200-2.5D</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-10-vv-5320-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-1-wv-in-70-vv-alcohol-neutralized-5618-5</loc>
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      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-5</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1c_e72b4920-e5c4-4c26-86d9-47f0fa595bb5.png?v=1776329392</image:loc>
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      <image:caption>Nonaqueous Buffer Stock Solution A, for Acid Number of Petroleum Products - 5462-32</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-05-wv-in-50-vv-methanol-neutralized-5605-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_b43a34a2-4c98-4a30-8d41-a663ee000257.png?v=1776329390</image:loc>
      <image:title>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Methanol, Neutralized - 5605-32</image:title>
      <image:caption>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Methanol, Neutralized - 5605-32</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_24c2d3f2-05f6-47ec-80fd-cc4852a8681b.png?v=1776329387</image:loc>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_f3e98437-5b1c-4932-acf2-2e832153eb4a.png?v=1776329391</image:loc>
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      <image:caption>Nitric Acid, 14.3% (v/v) - R5323600-100A</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_20f_39297599-01b5-4961-9cc6-bbd1824749ce.png?v=1776329396</image:loc>
      <image:title>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-5</image:title>
      <image:caption>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-5</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-in-denatured-ethanol-53181-5</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_20f_f4d4ee9b-21f4-4d73-88fc-e81412d10570.png?v=1776329386</image:loc>
      <image:title>Nitric Acid, 5% (v/v) in denatured Ethanol - 5318.1-5</image:title>
      <image:caption>Nitric Acid, 5% (v/v) in denatured Ethanol - 5318.1-5</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrite-nitrogen-standard-100-ppm-n-3285-ppm-no-54611-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_120c_b1f703b1-356b-474b-beca-3c8bd0dc1afb.png?v=1776329391</image:loc>
      <image:title>Nitrite Nitrogen Standard, 100 ppm N (328.5 ppm NO??) - 5461.1-4</image:title>
      <image:caption>Nitrite Nitrogen Standard, 100 ppm N (328.5 ppm NO??) - 5461.1-4</image:caption>
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  </url>
  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_20f_94f7119d-9d93-423f-9a74-6ee575777e96.png?v=1776329387</image:loc>
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      <image:caption>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.6-5</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-60-vv-isopropyl-alcohol-neutralized-56256-4</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120a_c9328324-cd35-4f83-b388-836415bd975f.png?v=1776329391</image:loc>
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      <image:caption>Phenolphthalein, 1% (w/v) in 60% (v/v) Isopropyl Alcohol, Neutralized - 5625.6-4</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrate-standard-1000-ppm-no-226-ppm-n-5458-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitrate Standard, 1000 ppm NO?? (226 ppm N) - 5458-16</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_f5d68f1b-be3a-4537-8ac2-3f3724c291e3.png?v=1776329389</image:loc>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500c_dd3b88cb-71b3-4091-938d-694cbb829050.png?v=1776329392</image:loc>
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      <image:caption>Nitrite Nitrogen Standard, 100 ppm N (328.5 ppm NO??) - 5461.1-16</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_1a_2587ed63-f2ca-4588-b902-72169bbf5148.png?v=1776329390</image:loc>
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    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Nitrate Nitrogen Standard, 100 ppm N (442.7 ppm NO??) - 5457-16</image:title>
      <image:caption>Nitrate Nitrogen Standard, 100 ppm N (442.7 ppm NO??) - 5457-16</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_20f_88ddacf5-754e-4853-81c8-5df28a851608.png?v=1776329390</image:loc>
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      <image:caption>Nitric Acid, 10% (v/v) in Methanol - R5320100-20F</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nital Etchant, 20% (v/v) in Reagent Alcohol - R5323020-4A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-3-in-95-etoh-r5620300-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_b97c5cb9-1bc7-4f28-b121-f86af6d5b0a4.png?v=1776329394</image:loc>
      <image:title>Phenolphthalein 3% in 95% EtOH - R5620300-1A</image:title>
      <image:caption>Phenolphthalein 3% in 95% EtOH - R5620300-1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-200-mv-vs-agagcl-4m-kcl-sat-with-agcl-filling-solution-54645-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-1</image:title>
      <image:caption>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-indicator-1-wv-in-70-vv-alcohol-neutralized-5618-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_fd4438f7-4e30-458b-8449-c9e829eabe29.png?v=1776329389</image:loc>
      <image:title>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-16</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in 70% (v/v) Alcohol, Neutralized - 5618-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitrate-nitrogen-standard-100-ppm-n-4427-ppm-no-5457-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_f741ee53-0d2c-4b85-a722-74cef3939bbd.png?v=1776329390</image:loc>
      <image:title>Nitrate Nitrogen Standard, 100 ppm N (442.7 ppm NO??) - 5457-32</image:title>
      <image:caption>Nitrate Nitrogen Standard, 100 ppm N (442.7 ppm NO??) - 5457-32</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-600-mv-vs-agagcl-4m-kcl-sat-with-agcl-filling-solution-54646-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_4c_219de0d9-a410-490d-ab81-6c7bf16e512e.png?v=1776329394</image:loc>
      <image:title>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.6-1</image:title>
      <image:caption>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.6-1</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_7a26464c-eeb4-4cb4-aeec-a26a1f8caa7f.png?v=1776329391</image:loc>
      <image:title>Nital Etchant, 10% (v/v) Nitric Acid in Reagent Alcohol - R5323000-1A</image:title>
      <image:caption>Nital Etchant, 10% (v/v) Nitric Acid in Reagent Alcohol - R5323000-1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-240-mv-r5464501-500b</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500b_cce763f2-46b0-4464-ba9b-ee6fadfb46f5.png?v=1776329400</image:loc>
      <image:title>ORP Standard, 240 mV - R5464501-500B</image:title>
      <image:caption>ORP Standard, 240 mV - R5464501-500B</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-05-wv-in-50-vv-isopropyl-alcohol-56255-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_a7b2842d-b4ba-4af6-aec5-f8e21e0ffe38.png?v=1776329391</image:loc>
      <image:title>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Isopropyl Alcohol - 5625.5-16</image:title>
      <image:caption>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Isopropyl Alcohol - 5625.5-16</image:caption>
    </image:image>
  </url>
  <url>
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      <image:title>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-2.5</image:title>
      <image:caption>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-2.5</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-01-wv-in-50-vv-isopropyl-alcohol-neutralized-r5625100-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_11ca1774-bd78-49bf-912a-548542636edf.png?v=1776329395</image:loc>
      <image:title>Phenolphthalein, 0.1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - R5625100-1A</image:title>
      <image:caption>Phenolphthalein, 0.1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - R5625100-1A</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_4a_0b1fe1b4-6ea1-4143-a941-65066195452f.png?v=1776329391</image:loc>
      <image:title>Nital Etchant, 10% (v/v) Nitric Acid in Reagent Alcohol - R5323000-4A</image:title>
      <image:caption>Nital Etchant, 10% (v/v) Nitric Acid in Reagent Alcohol - R5323000-4A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-9-vv-r5319600-20f</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nitric Acid, 9% (v/v) - R5319600-20F</image:caption>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:caption>Phenolphthalein Indicator, 0.5% (w/v) in 50% (v/v) Alcohol, Neutralized - 5600-16</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/orthophenanthroline-ts-0025-m-phenanthroline-ferrous-sulfate-54648-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Orthophenanthroline TS, 0.025 M Phenanthroline Ferrous Sulfate - 5464.8-16</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_2e468d0c-e028-4bce-9977-3374b20bcbdf.png?v=1776329396</image:loc>
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      <image:caption>Phenolphthalein, 0.5% (w/v) in 50% (v/v) Isopropyl Alcohol - 5625.5-32</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_90975377-3df8-462e-96dd-2202d4c49b51.png?v=1776329399</image:loc>
      <image:title>Phenolphthalein Indicator, 1% (w/v) in Pyridine - 5627-100</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in Pyridine - 5627-100</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-60-vv-isopropyl-alcohol-neutralized-56256-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_1a_84008a85-2c7d-4ef6-a259-98463af68922.png?v=1776329397</image:loc>
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      <image:caption>Phenolphthalein, 1% (w/v) in 60% (v/v) Isopropyl Alcohol, Neutralized - 5625.6-32</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-in-50-denatured-ethanol-r5622100-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Phenolphthalein, 1% in 50% denatured Ethanol - R5622100-500A</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nuclear Fast Red Solution - R5463200-500A</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_ac4853ff-a944-4222-8e0a-b49d58443876.png?v=1776329402</image:loc>
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      <image:caption>ORP Standard, +450 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - R5464545-500C</image:caption>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Phenolphthalein Indicator, 1% (w/v) in Methanol, Neutralized - 5621-16</image:title>
      <image:caption>Phenolphthalein Indicator, 1% (w/v) in Methanol, Neutralized - 5621-16</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-50-vv-isopropyl-alcohol-neutralized-5625-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_4a_b09669e5-a2fe-422a-a8e0-5ea1af08b385.png?v=1776329398</image:loc>
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      <image:caption>Phenolphthalein, 1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - 5625-1</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-5-vv-in-methanol-r5318200-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Nitric Acid, 5% (v/v) in Methanol - R5318200-500A</image:title>
      <image:caption>Nitric Acid, 5% (v/v) in Methanol - R5318200-500A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-01-wv-in-50-vv-isopropyl-alcohol-neutralized-r5625100-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_500a_06ea3f65-2d00-41b8-bf16-f4bbbde31d61.png?v=1776329396</image:loc>
      <image:title>Phenolphthalein, 0.1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - R5625100-500A</image:title>
      <image:caption>Phenolphthalein, 0.1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized - R5625100-500A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phosphate-buffered-saline-1x-non-sterile-r5819000-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_dd2b5d9e-0273-4814-aae6-b7a99e2a3c81.png?v=1776329398</image:loc>
      <image:title>Phosphate Buffered Saline, 1X - Non-sterile - R5819000-1A</image:title>
      <image:caption>Phosphate Buffered Saline, 1X - Non-sterile - R5819000-1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-200-mv-vs-agagcl-4m-kcl-sat-with-agcl-filling-solution-54645-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500c_411e3024-b5a1-41ce-8c71-25d8b46fe4f1.png?v=1776329403</image:loc>
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      <image:caption>ORP Standard, +200 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.5-16</image:caption>
    </image:image>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenol-red-indicator-01-wv-r5720100-500a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption>Phenol Red Indicator, 0.1% (w/v) - R5720100-500A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nitric-acid-143-vv-r5323600-250a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-standards_cc4e6b66-be0f-4186-992d-ab6e26ddb529.png?v=1776329400</image:loc>
      <image:title>Nitric Acid, 14.3% (v/v) - R5323600-250A</image:title>
      <image:caption>Nitric Acid, 14.3% (v/v) - R5323600-250A</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/nital-etch-3-vv-nitric-acid-in-methanol-r5316400-1c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:caption>Nital Etch, 3% (v/v) Nitric Acid in Methanol - R5316400-1C</image:caption>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-1-wv-in-isopropyl-alcohol-r5626000-120a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-flammable_120a_0004c2ba-a827-49ca-bd42-cf06f29a1a30.png?v=1776329400</image:loc>
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      <image:caption>Phenolphthalein, 1% (w/v) in Isopropyl Alcohol - R5626000-120A</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenol-stock-standard-500-005-wv-5738-1</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_4c_f28ed46d-58fd-4742-96bc-86352ad6a38f.png?v=1776329402</image:loc>
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      <image:caption>Phenol Stock Standard, 5.00 ± 0.05% (w/v) - 5738-1</image:caption>
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  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-600-mv-vs-agagcl-4m-kcl-sat-with-agcl-filling-solution-54646-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500c_91c01b85-e992-4178-a898-bae37567ccad.png?v=1776329399</image:loc>
      <image:title>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.6-16</image:title>
      <image:caption>ORP Standard, +600 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - 5464.6-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenol-stock-standard-500-005-wv-5738-32</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1c_3f1cb988-1da1-4424-8c01-7c1c94fe0fe7.png?v=1776329399</image:loc>
      <image:title>Phenol Stock Standard, 5.00 ± 0.05% (w/v) - 5738-32</image:title>
      <image:caption>Phenol Stock Standard, 5.00 ± 0.05% (w/v) - 5738-32</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phosphate-standard-05-ppm-po4-r5826050-1a</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_1a_a65ff04b-f312-4dbe-b865-97e51b998309.png?v=1776329397</image:loc>
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      <image:caption>Phosphate Standard, 0.5 ppm PO4 - R5826050-1A</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/orp-standard-400-mv-vs-agagcl-4m-kcl-sat-with-agcl-filling-solution-r5464540-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-corrosive_500c_3fbb72f4-7f6b-447e-9254-4b20b2516b75.png?v=1776329403</image:loc>
      <image:title>ORP Standard, +400 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - R5464540-500C</image:title>
      <image:caption>ORP Standard, +400 mV vs. Ag/AgCl (4M KCl sat. with AgCl filling solution) - R5464540-500C</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/ph-47-phenol-red-ts-5721-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0757/2327/6437/files/ricca-general_500a_9e82c501-114d-422b-853d-793943de32bd.png?v=1776329403</image:loc>
      <image:title>pH 4.7 Phenol Red TS - 5721-16</image:title>
      <image:caption>pH 4.7 Phenol Red TS - 5721-16</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-2-in-95etoh-r5630000-500c</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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    <changefreq>daily</changefreq>
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    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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  <url>
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    <changefreq>daily</changefreq>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
    <changefreq>daily</changefreq>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
    <loc>https://labproinc2.myshopify.com/products/phenolphthalein-tsrs-1-wv-alcoholic-5622-16</loc>
    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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      <image:caption>Phenol Standard, 1000 ppm C?H?OH (0.100% (w/w)) - 5740-16</image:caption>
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  <url>
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  <url>
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    <changefreq>daily</changefreq>
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    <changefreq>daily</changefreq>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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  <url>
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    <lastmod>2026-07-21T12:31:02-07:00</lastmod>
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  <url>
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