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Fuel ethanol. Determination of total and potential sulfates and inorganic chlorides by method of direct injection suppressed ion chromatography
Document status: Active
Iron ores, concentrates, agglomerates and pellets. Methods of determination of potassium oxide and natrium oxide content
Document status: Active
Solid mineral fuel. Determination of total sulfur. High temperature combustion method
Document status: Active
Copper concentrates. Methods for determination of aluminium oxide
Document status: Replaced by GOST 32221-2013
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