Abstract
This is a report of work on the development of the national secondary standard for the units of the mass fraction and mass (molar) concentration of metals in liquid and solid substances and material, GVET 196-1-2012, intended for reproduction of the units of mass fraction of metals in the range 1·10–3–99.9% in solid substances and materials, mass fraction of metals in the range 1·10–4–6%, and mass and molar concentration in the ranges 1·10–4–60 g/dm3 and 2·10–5–2 mol/dm3 in liquid substances and materials. In terms of its metrological characteristics, this standard corresponds to a secondary standard in the national verification scheme for instruments that measure the amounts of the components in liquid and solid substances and materials.
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