This standard establishes an atomic absorption method for the determination of zinc and copper with a mass fraction of zinc from 0.0005 to 0.05%, copper from 0.002 to 0
GOST 1293.5-1983 Referenced Document
GOST 11125-1984 Super pure nitric acid. Specifications*, 1984-04-19 Update
GOST 1293.0-1983 Lead-antimony alloys. General requirements for methods of chemical analysis