Государственный вторичный эталон единиц массовой доли и массовой (молярной) концентрации металлов в жидких и твердых веществах и материалах

Abstract

The results of development of the state secondary standard of units of mass fraction and mass (molar) concentration of metals in solid and liquid substances and materials ГВЭТ 196-1–2012 are presented. The standard is intended for reproduction of mass fraction units of metals in solids and materials in the range of 1∙10^–3–99,9 %, mass fraction of metals in the range of 1∙10^–4–6 %, mass concentration of metals in the range of 1∙10^–4–6 % g/dm³, and molar concentration of metals in the range of 2·10^–5–2 mol/dm³ in liquid substances and materials. The standard by metrological characteristics corresponds to secondary standard of the State verification scheme for instruments measuring the content of components in liquid and solid substances and materials.