Home / Standards / GB/T 6920-1986 GB/T 6920-1986 Active Water quality--Determination of pH value--Glass electrode method 水质 pH值的测定 玻璃电极法 Standard Type GBT ICS 13.060 CCS Z50 Status 现行 Issue Date 1986-10-10 Implementation 1987-03-01 Responsible Dept 生态环境部 Drafting Unit N/A