Home / Standards / GB/T 22921-2008 GB/T 22921-2008 Active Paper and board - Determination of water vapour transmission rate of sheet materials - Dynamic sweep and static gas methods 纸和纸板 薄页材料水蒸气透过率的测定 动态气流法和静态气体法 Standard Type GBT ICS 85.010 CCS Y30 Status 现行 Issue Date 2008-12-30 Implementation 2009-09-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A