OREAS CRM’s are manufactured by Ore Research & Exploration Pty Ltd (ORE), a privately owned Australian-based company specialising in the development of low priced Certified Reference Materials (CRMs) for the mining and exploration industry. Founded in 1986 by Dr Paul Hamlyn in Melbourne, Australia and still owned by the Hamlyn family; ORE commenced production of CRMs in 1988.  It is the largest dedicated mineral CRM production facility in the world and has the largest mineral CRM library.

All CRMs are prepared and certified to ISO standards and are supplied with comprehensive documentation.  Sophisticated proprietary technology ensures high levels of homogeneity, with industry-leading repeatability demonstrated for all gold ores down to a 0.5-gram analytical subsample. An independent study by Dr N.W Brand published in EXPLORE - the newsletter for the Association of Applied Geochemists published in Ottawa, Canada; has showed that OREAS Au CRMs have the best homogeneity of any of the major manufacturers.

OREAS are represented in North America by Analytical Solutions Ltd; West Africa by X&M Suppliers and in Southern Africa by Mineral Standards (Pty) Ltd.