Home / Standards / GB/T 3143-1982 GB/T 3143-1982 Active Colour determination method of liquid chemicals (Hazen unit--platinum-cobalt scale) 液体化学产品颜色测定法 (Hazen单位--铂-钴色号) Standard Type GBT ICS 71.040.40 CCS G04 Status 现行 Issue Date 1982-07-20 Implementation 1983-03-01 Responsible Dept 国家标准委 Drafting Unit N/A