Environmental laboratory
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Merck’s diluted, certified standard solutions (CRMs) are ideal for quality control of photometric methods. These are perfect for use with Merck’s Spectroquant ™ Prove spectrophotometers and Spectroquant ™ test kits, for simple, reliable and robust water analysis. Merck’s CRMs are directly traceable to NIST primary reference materials and offer an expanded measurement uncertainty for every concentration. Whether you are analyzing drinking water, process water or wastewater, Merck’s certified reference materials deliver the highest standard in precision. Ready-to-use standards for TOC analysers, ICP-OESor ion chromatography are also available.
For more information, visit SigmaAldrich.com/diluted-crms
IET 36.5 Sept/Oct 2026
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