Home / Standards / GB/T 20778-2006 GB/T 20778-2006 Active Evaluation of biodegradability of water treatment chemicals - Carbon dioxide evolution test 水处理剂可生物降解性能评价方法 - CO2 生成量法 Standard Type GBT ICS 71.100.80 CCS G76 Status 现行 Issue Date 2006-12-29 Implementation 2007-06-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A