OREAS CRM’s are prepared from natural ores, rocks and soils; sourced from mines and deposits in Australia, Southeast Asia, South America and Africa.
Mineral Standards (Pty) Ltd
Providing customer and logistical support for OREAS services and products in Southern Africa, from Johannesburg (in the Central African Time Zone).
Michael McWha
Mike is a recognised world authority on the manufacture and use of mineral CRM’s. He has over 30 years’ experience in the South African and Australasian mining, exploration and mineral industries.
Testimonals
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"We used CRM's to catch out a junior who deliberately choose a lab with a positive bias."
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Reference Materials are Control Samples with known grade characteristics that are inserted into a sample batch to test the assay results for samples with unknown grade characteristics. Their use is not just best practice in Assay Laboratory QA/QC, it is law.
Compliance
Reference Material use in Sample and Laboratory QA/QC is mandated for Mining Company financial reporting by stock exchanges. Technical Reports backing up the financials must, under a section on the analysis of samples, include a discussion of laboratory accreditation, precision and accuracy, including the use of quality control programs (blanks, duplicates, certified or standard reference materials), and submission of samples to other laboratories for verification. This is pretty much the global standard now. Companies wishing to raise money for exploration and mining have to play by the investors rules.