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Brown coals and hard coals. Methods for the determination of humic acids yields
Document status: Replaced by GOST 9517-94
Residual fuel oils. Test for straight-run. Method for determination of peptization number
Document status: Active
Petroleum. Method for determination of hydrogen sulfide, methyl- and ethylmercaptans
Document status: Replaced by GOST R 50802-2021
Reagents. Methods for determination of sulfates impurity
Document status: Active
Copper concentrates. Methods for determination of gold and silver
Document status: Replaced by GOST 32221-2013