IS 8858 : 1978 Methods for spectrographic analysis of fine silver ingot (grades 9999 and 999)

1 Scope

1.1 This standard prescribes spectrographic method for thedetermination of metallic impurities for grades 9999 and 999 silveras specified in IS 5320-1969. However, the methods do not cover Pt,Pd, Se and Te for grade 9999.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 5320 : 1969Specification for fine silver ingot

IS 6010 : 1971Recommended practice for photographic processing inspectrochemical analysis