Home / Standards / GB 6856-2008 GB 6856-2008 Active pH primary reagent - Sodium tetraborate decahydrate pH 基准试剂 四硼酸钠 Standard Type GB ICS 71.040.30 CCS G61 Status 现行 Issue Date 2008-12-31 Implementation 2009-06-01 Responsible Dept 工业和信息化部 Drafting Unit N/A