Home / Standards / GB/T 19421.7-2003 GB/T 19421.7-2003 Test method for layered crystalline sodium disilicate — Determination of moisture content by gravimetric method 层状结晶二硅酸钠试验方法 重量法测定湿存水量 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A