This standard establishes a spectral method for the determination of sodium (with a mass fraction of sodium from 0.001% to 0.02%) and potassium (with a mass fraction of
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 851.8-1993 history
1993GOST 851.8-1993 Primary magnesium. Spectral method for determination of sodium and potassium
1987GOST 851.8-1987 Primary magnesium. Method for the determination of sodium and potassium