IS 7255 : Part 1 : 1974 Methods of chemical analysis of solders for use in goldware Part 1 Determination of gold, silver and copper

1 Scope

1.1 This standard covers the methods for determination of gold,silver and copper in solders for use in goldwares as specified inIS 3095 : 1966.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 264 :1968Specification for nitric acid

IS 265 :1964Specification for hydrochloric acid

IS 266 :1961Specification for sulphuric acid

IS 1070 :1960Specification for water, distilled quality

IS 3095 :1966Specification for solders for use in goldware

IS 4667 : Part I :1968 Methods of chemical analysis ofsilver-copperbrazing alloys: Part I Analysis for silver andcopper