Home / Standards / GB/T 11914-1989 GB/T 11914-1989 Abolished Water quality--Determination of thechemical oxyyen demand--Dichromate method 水质 化学需氧量的测定 重铬酸盐法 Standard Type GBT ICS N/A CCS Z16 Status 废止 Issue Date 1989-11-03 Implementation 1990-07-01 Responsible Dept 生态环境部 Drafting Unit N/A