This standard establishes an extraction-photometric method for the determination of arsenic (with a mass fraction of arsenic from 0.001 to 0.1%), photome
GOST 8.315-1991 State system for ensuring the uniformity of measuring. Reference materials. Basic principles, ways of development, certification, approval, registration and use*, 1991-04-18 Update
GOST 1652.8-1977 history
1977GOST 1652.8-1977 Copper-zinc alloys. Methods for the determination of arsenic