N.G. Oganyan FSUE “VNIIFTRI”, Mendeleevo, Moscow regionmera@vniiftri.ru Al’manac of Modern Metrology № 3 (19) 2019, pages 17–24 The article provides an overview of the definitions of the terms “reference material” and “certified reference material”, talks about the current problem and the need to revise documents to harmonize definitions in all legislative and normative documents of Russia … Continue reading Reference materials of physical and chemical measurements in Russia