Home / Standards / GB 6851-2008 GB 6851-2008 Active pH primary reagent - General rules for certification pH基准试剂 定值通则 Standard Type GB ICS 71.040.30 CCS G60 Status 现行 Issue Date 2008-06-18 Implementation 2009-06-01 Responsible Dept 工业和信息化部 Drafting Unit N/A