Revised Standard from Last Update.

1. SCOPE

This standard prescribes the method for determination of residue on chlorination of tungsten metal powder which is a measure of the purity of the sample.

2. REFERENCES

The following standards contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below:

IS 265 : 2021 Hydrochloric acid - Specification (fifth revision)

IS 266 : 1993 Sulphuric acid - Specification (third revision)

IS 6492 : 2020 Powders for powder metallurgical purposes - Sampling (first revision)