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Clay raw materials. Method for determination of calcium and magnesium in water extract

Document status: Replaced by GOST 21216-2014

Reagents. Bismuth (III) nitrate pentahydrate. Specifications

Document status: Active

Petroleum and petroleum products. Methods for determination of density

Document status: Replaced by GOST 3900-2022

Essential oils, aromatics and their intermediates. Method of analysis by gas chromatography

Document status: Active

Amperometric analyzers for dissolved oxygen SSI. General technical requirements

Document status: Active

Iron ores, concentrates, agglomerates and pellets. General requirements to the methods of chemical analyses

Document status: Replaced by GOST 32520-2013