Miscellaneous domestic and commercial equipment (ICS 97.180)
DRS 409: 2019 School chalk — Specification (25 page(s), in English)
This Committee Draft specifies requirements, sampling and test methods for white and coloured chalk intended to be used on chalkboards.It applies to three types of chalks:
a) Soft chalks;
b) Hard chalks; and
c) Soft dust-free chalks.