Home / Standards / GB/T 12990-1991 GB/T 12990-1991 Active Water quality--Microbial community biomonitoring--PFU method 水质 微型生物群落监测 PFU法 Standard Type GBT ICS 13.060 CCS Z22 Status 现行 Issue Date 1991-08-20 Implementation 1992-04-01 Responsible Dept 生态环境部 Drafting Unit N/A