This standard establishes an atomic absorption method for the determination of lead (with a mass fraction of lead from 0.0005 to 0.01%) in primary magnesium
GOST 8.315-1991 State system for ensuring the uniformity of measuring. Reference materials. Basic principles, ways of development, certification, approval, registration and use
GOST 851.12-1993 history
1993GOST 851.12-1993 Primary magnesium. Method for determination of lead