18K Gold CRM - 1/4" x 1/4" - Certified Reference Materials - Precious Metals - For XRF Analyzers radiation safety This check sample consist of

This check sample consist of Pure and Sterling Silver

this our 14 karat precious metal meets the ISO Guides 31

Aluminum 383

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18K Gold CRM - 1/4" x 1/4" - Certified Reference Materials - Precious Metals - For XRF Analyzers radiation safety This check sample consist ofThe 18k Gold Standard by The XRF Company is a certified reference material to meet your gold analysis needs. This large precious metal reference material measures at 1 4 inch by 1 4 inch. Whether you are using an XRF gun or a different type of analyzer, this our 18 karat precious metal meets the ISO Guides 31, 34, and 35. It is a certified reference material as defined by ISO Guide 30. This check sample consists of 78. 85% Au, 14. 80% Ag, 9. 59% Cu,