Inorganic Ventures' 1000 ppm Ammonium for IC is a certified reference material set in a water matrix for stability. This ammonium standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . Size: …

Inorganic Ventures' 1000 ppm Ammonium-Nitrogen for IC is a certified reference material set in a water matrix for stability. This ammonium as n standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . …