标准号:KS 03-89-1979
中文标准名称:肯尼亚粉笔标准规格
英文标准名称:KENYA STANDARD SPECIFICATION FOR SCHOOL CHALKS
发布日期:1979/1/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This Kenya Standard prescribes the requirements, methods of sampling and test for white and coloured chalks, made from good quality calcined gypsum or calcium sulphate hemihydrate (CaSO.1/2HzO) type intended for writing on chalkboards. The standard does not apply to calcium carbonate type of chalks.