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Concentrated kaolin. Method for determination of calcium and magnesium oxides sum in water extract
Document status: Active
Surface active agents. Preparation of water with known calcium hardness
Document status: Active
Laboratory glassware. Methods for assessing the chemical resistance of enamels for colour coding and colour marking
Document status: Active
Alumina. Method for the determination of loss of mass on ignition
Document status: Active
Coal coke with size of pieces 20 mm and more. Method of determination of strength after reaction with dioxide carbon
Document status: Replaced by GOST R 50921-2005