Inorganic Ventures' 100 ppm Tungsten for ICP-MS is a certified reference material set in a nitric acid (tr. hydrofluoric acid) matrix for stability. This tungsten standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year …

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