Tungsten ICP Standard, 1,000 ppm

• A single-element calibration standard: This is a tungsten single-element standard at 1,000 ppm (1,000 mg/L) tungsten, formulated for calibrating inductively coupled plasma (ICP) instruments and related atomic-spectroscopy techniques. Accurate, traceable single-element standards are the foundation of reliable quantitative trace-metal analysis: an instrument can only be as accurate as the standards used to calibrate it, which is why well-characterized solutions like this one are essential in the analytical laboratory.
• How it is used: Analysts use the standard to prepare calibration curves and to verify instrument performance for tungsten, either on its own or diluted to create a series of concentrations that bracket the expected sample levels. It supports ICP-OES and ICP-MS as well as atomic absorption work, and it is equally valuable for routine calibration and for quality-control checks that confirm an instrument is still measuring accurately during a run.
• Verified matrix and identity: The standard is prepared as 1,000 ppm tungsten in a water matrix with a trace of ammonium hydroxide (NH4OH), a matrix chosen because it keeps tungsten stable in solution and resistant to precipitation over the product's shelf life. The LabPro listing gives CAS numbers 7732-18-5 (water), 11120-25-5 (the tungsten source), and 1336-21-6 (ammonium hydroxide), which together describe the composition of the solution.
• Storage and shelf life: To preserve the certified concentration, the standard should be stored according to the manufacturer's guidance and the certificate, with the container kept tightly closed to prevent contamination or evaporation that could shift the value. Choosing a size, 100 mL or 500 mL, that matches calibration throughput helps ensure the standard is used within a reasonable period while still valid, keeping calibrations and quality checks accurate.

Recommended For

• Calibrating ICP-OES and ICP-MS instruments
• Atomic absorption spectroscopy calibration
• Trace tungsten quantification
• Analytical quality control

Product Details

• Product: Tungsten single-element ICP standard
• Concentration: 1,000 ppm (1,000 mg/L) W
• Matrix: H2O with trace NH4OH
• CAS numbers: 7732-18-5, 11120-25-5, 1336-21-6
• Available sizes: 100 mL, 500 mL

Available Variants

• 23270 — Tungsten, 1,000 ppm ICP Standard Solution, 100 mL
• 23272 — Tungsten, 1,000 ppm ICP Standard Solution, 500 mL
• The two variants are the same 1,000 ppm tungsten standard in 100 mL and 500 mL sizes; choose the volume to match your calibration needs.

Primary Industries

• Analytical and testing laboratories
• Environmental testing
• Metals and mining analysis
• Quality control

Standards and Certifications

• None specified by source