ZS 071: School Chalks - Specification

Specifies materials, size, mass free moisture and breaking strength of moulded white and coloured chalks, which are intended primarily for writing on chalk boards
Also covers quality requirements, packaging, marking, inspection, sampling and testing

Source of regulation

Zambia Bureau of Standards (ZABS) 

Publication of regulation

Statutory Instrument No. 44 of 2013 

Date of implementation

31 May 2013 

Regulation file