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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...
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