IS 4311 : 1967 Method for the Determination of Mineral Matter in Coal

1 Scope

1.1 This standard prescribes the direct method for thedetermination of mineral matter in coal.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 265 : 1962Specification for hydrochloric acid

IS 1352 : 1959Methods of test for coal and coke - special impurities

IS 1355 : 1959Methods of test for ash of coal and coke