Inorganic Ventures' 1000 ppm Hafnium for AA is a certified reference material set in a water (tr. nitric acid / HF) matrix for stability. This hafnium standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . …

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