GB/T 19421.5-2003 Test methods of crystalline layered sodium disilicate--EDTA volumetric methods for determination of magnesium exchange capacity content (English Version)
This part of GB/T 19421 specifies the analytical method for magnesium exchange capacity in layered crystalline sodium disilicate. This section applies to the determination of magnesium exchange capacity in layered crystalline sodium disilicate that can be used as a detergent builder.
GB/T 19421.5-2003 history
2008GB/T 19421-2008 Test methods of crystalline layered sodium disilicate
2003GB/T 19421.5-2003 Test methods of crystalline layered sodium disilicate--EDTA volumetric methods for determination of magnesium exchange capacity content
GB/T 19421.5-2003 Test methods of crystalline layered sodium disilicate--EDTA volumetric methods for determination of magnesium exchange capacity content was changed to GB/T 19421-2008 Test methods of crystalline layered sodium disilicate.