OREAS 99 is a copper concentrate obtained from the CSA mine in Cobar, New South Wales. This reference material has been characterised for Cu and Ag by classical methods at umpire laboratories. It is packaged in 10g units and sealed under nitrogen in laminated foil pouches.
|Analyte||Certified Value||1SD||95% Confidence Limits Low||95% Confidence Limits High||Method|
|Cu, Copper (wt.%)||25.89||0.100||25.82||25.96||Classical Wet Chemistry|
|Ag, Silver (ppm)||67.3||1.70||66.1||68.5||4-Acid Digestion|
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