IS 246 : 1986 Sodium thiosulphate, crystalline, photographic grade

1 Scope

1.1 This standard prescribes the requirements and the methods ofsampling and test for sodium thiosulphate, crystalline,photographic grade.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 265 : 1976Specification for hydrochloric acid

IS 1070 : 1977Specification for water for general laboratory use

IS 2316 : 1968Methods of preparation of standard solutions forcolorimetric and volumetric analysis