- Standard No.
- GB/T 19421.7-2003
- Language
- Chinese
- Release Date
- 2003
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 19421-2008
- Lastest
-
GB/T 19421-2008
- Scope
- This part of GB/T 19421 specifies the method for the determination of wet water storage in layered crystalline sodium disilicate. This section applies to the determination of wet storage in layered crystalline sodium disilicate that can be used as a detergent builder.
GB/T 19421.7-2003 history
- 2008 GB/T 19421-2008 Test methods of crystalline layered sodium disilicate
- 2003 GB/T 19421.7-2003 Test methods of crystalline layered sodium disilicate-Gravimetric methods for determination of hygroscopic moisture
GB/T 19421.7-2003 Test methods of crystalline layered sodium disilicate-Gravimetric methods for determination of hygroscopic moisture was changed to GB/T 19421-2008 Test methods of crystalline layered sodium disilicate.