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Niobium pentoxide. Method for the determination of potassium and sodium content
Document status: Active
Petroleum Products. lubricating oils and additives. Determination of sulphated ash
Document status: Active
Coal tar pitch. Method for determination of mass fraction of substances insoluble in toluene
Document status: Replaced by GOST 7847-2020
Ethyl alcohol for industrial use. Method for determination of carbonyl compounds
Document status: Withdrawn
