African Mineral Standards (AMIS), is an ISO 17034 accredited CRM producer, and an ISO 17043 accredited PT scheme provider. AMIS is one of the leading global manufacturers of quality Certified Reference Materials for the mining and exploration industries. We are proud recipients of the Legends of Empowerment award.All AMIS CRMs are matrix matched and manufactured from naturally sourced raw materials from all around the world. They are made to match mine ore grades, ore matrices and plant products; and are priced to be used for routine laboratory QC.A wide variety of different gold, platinum and base metal CRM's, made out of material from different mines, are available in the AMIS online shop. A confidential external Proficiency Testing Service is available free of charge for mineral laboratories.