Abstract
The concept of reference materials metrological traceability establishment within the framework of Euro-Asian Cooperation of National Metrological Institutions (COOMET) Technical Committee 1.12 “Reference Materials” (TC 1.12) is overviewed. Particular cases of COOMET Reference Materials development are provided. The authors considered approaches to demonstrate a metrological traceability of reference materials with different types of their characterisation, e. g., appliance of national measurement standards, or performance of interlaboratory comparison testing, or usage of primary reference measurement procedure for reference materials characterisation if a state measurement standard for units is absent.
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