Reaffirmed 2022

1 SCOPE

This standard prescribes the requirements, methods of sampling and tests for moulded white chalks intended primarily for writing on blackboards in school.

2 REFERENCES

The standards given below 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 these standards:

IS 1070 : 1992 Reagent grade water (third revision)

IS 460 (Part 1) : 1985 Test sieves: Part 1 Wire cloth test sieves (third revision)