OREAS 232b reference material
Certified values
Au, ppm0.946
Cu0.0026 %
ManufacturerOREAS
Packagingpouch
Values from the manufacturer's certificate. Exact tolerances (1SD, confidence intervals) are given in the certificate supplied with the pack.
What it is used for
Inserted into gold sample batches to check fire assay accuracy. A grade of 0.946 ppm suits QC of typical ore-grade samples. Certified copper checks the accuracy of copper and gold assays.
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