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Reagents. Zinc compounds. Polarographic method for the determination of copper, lead and cadmium contents as impurities

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Reagents. Hydrazine sulfate

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Road petroleum liquid bitumens. Specifications

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Active carbon AG-3. Specifications

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Reagents. Ammonium dihydrogen orthophosphate Specifications

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Chrysotile asbestos. Method for determination of fractional composition and foreign matters content on the testing machine

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