Home / Standards / GB/T 23368.1-2009 GB/T 23368.1-2009 Active Methods for chemical analysis of ammonium metatungstate - Part 1: Determination of water insoluble content - Gravimetric analysis 偏钨酸铵化学分析方法 第1部分：水不溶物量的测定 称量法 Standard Type GBT ICS 77.120.99 CCS H63 Status 现行 Issue Date 2009-03-19 Implementation 2010-01-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A