IS 9925 : 1981 Method for determination of gold and silver in gold and silver thread and embroidery materials

1 Scope

1.1 This standard covers the method for estimation of gold and silver in goldand silver thread and embroidery materials.

2 References

IS 2 :1960 Rules for rounding off numericalvalues

IS 264 :197 Specification for nitric acid

IS 265 :1976 Specification for hydrochloric acid

IS 1070 :1977 Specification for water for general laboratory use