Our solids CRMs are verified to work with the methods you use everyday. Easy to implement and use. There is no preparative step, simply shake the bottle well and measure an appropriate aliquot.

Formula: Na₂SO₄ Formula Weight: 142.04  

Inorganic Ventures' 1000 ppm Sodium for ICP is a certified reference material set in a nitric acid matrix for stability. This sodium standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . …

Silver Nitrate-water Traceable to NIST

StablCal® Turbidity Standard for all Turbidimeters. USEPA accepted for calibration purposes. StablCal® Stabilized Formazin Turbidity Standards are true Formazin dilutions developed for use in any turbidimeter.  Precise, Pre-mixed Formazin Solutions StablCal is Safe to Handle…