Abstract
Institute for Certified Reference Materials (ICRM) is a leading manufacturer of certified reference materials (CRM) for ferrous metallurgy. The entire process of CRM production from the purchase of a material to the certificate issuance takes about two years. The determination of the metrological characteristics is the longest stage of CRM production. The metrological characteristics of reference materials, are evaluated, as a rule, according to the results of an interlaboratory experiment and, in addition, in combination with a comparison method. The interlaboratory experiment arranged by ICRM, involves at least 10 competent analytical laboratories. The interlaboratory comparative tests are also carried out to test the qualification of laboratories. Since 2017, ICRM has been accredited by the Federal Accreditation Service as a proficiency provider of interlaboratory comparison.
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