{"product_id":"tungsten-icp-standard-1000-ppm","title":"Tungsten ICP Standard, 1,000 ppm","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA single-element calibration standard:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it is used:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerified matrix and identity:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage and shelf life:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRecommended For\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCalibrating ICP-OES and ICP-MS instruments\u003c\/li\u003e\n\u003cli\u003eAtomic absorption spectroscopy calibration\u003c\/li\u003e\n\u003cli\u003eTrace tungsten quantification\u003c\/li\u003e\n\u003cli\u003eAnalytical quality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Tungsten single-element ICP standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentration:\u003c\/strong\u003e 1,000 ppm (1,000 mg\/L) W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatrix:\u003c\/strong\u003e H2O with trace NH4OH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS numbers:\u003c\/strong\u003e 7732-18-5, 11120-25-5, 1336-21-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable sizes:\u003c\/strong\u003e 100 mL, 500 mL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAvailable Variants\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e23270 — Tungsten, 1,000 ppm ICP Standard Solution, 100 mL\u003c\/li\u003e\n\u003cli\u003e23272 — Tungsten, 1,000 ppm ICP Standard Solution, 500 mL\u003c\/li\u003e\n\u003cli\u003eThe 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.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePrimary Industries\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAnalytical and testing laboratories\u003c\/li\u003e\n\u003cli\u003eEnvironmental testing\u003c\/li\u003e\n\u003cli\u003eMetals and mining analysis\u003c\/li\u003e\n\u003cli\u003eQuality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandards and Certifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNone specified by source\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GFS Chemicals Inc.","offers":[{"title":"100 mL","offer_id":47264872431765,"sku":"23270","price":75.91,"currency_code":"USD","in_stock":true},{"title":"500 mL","offer_id":47756744130709,"sku":"23272","price":170.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/2327\/6437\/files\/gfs-heavy-metal-compounds_30565a4d-d2cf-4df4-80c4-5bd8ce2dba9c.jpg?v=1776342695","url":"https:\/\/checkout.labproinc.com\/products\/tungsten-icp-standard-1000-ppm","provider":"Lab Pro Inc Plus","version":"1.0","type":"link"}