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Copper concentrates. Methods for determination of aluminium oxide
Document status: Replaced by GOST 32221-2013
Iron and manganese ores, concentrates, agglomerates and pellets. Methods for determination of real, middle, bulk density and porosity
Document status: Active
Natural gas. Determination of composition with defined uncertainty by gas chromatography method. Part 3. Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns
Document status: Replaced by GOST 31371.3-2025
Phthalic anhydride for industrial use. Methods of test. Part 6. Determination of phthalic anhydride content. Titrimetric method
Document status: Active
Unused hydrocarbon-based insulating liquids. methods for evaluating the oxidation stability
Document status: Active