IS 8643 : 1977 Dye, methyl violet, for stamp-pad ink

1 Scope

1.1 This standard prescribes the requirements and the methods ofsampling and test for methyl violet dye for use in stamp-pad ink.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 266 : 1961Specification for sulphuric acid

IS 878 : 1956Specification for graduated measuring cylinders

IS 1070 : 1977Specification for water for general laboratory use

IS 1839 : 1961Specification for toluene, reagent grade

IS 4395 : 1967Glossary of terms relating to inks and allied industries