Home / Standards / GB/T 23773-2009 GB/T 23773-2009 Active Inorganic chemicals for industrial use - General method for determination of ammonium content - Nessler's reagent colorimetric method 无机化工产品中铵含量测定的通用方法 纳氏试剂比色法 Standard Type GBT ICS 71.060.01 CCS G10 Status 现行 Issue Date 2009-05-13 Implementation 2010-01-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A