PPS 3907
Project Plan 2026
Glass - Resistance to attack by a boiling aqueous solution of mixed alkali - Method of test and classification
Adopted by the Council as a standard on 14/10/2026
Sector:
Health and Personal Care
Project Method:
Adoption with modification
Project Type:
Update
International Classification for Standards (ICS)
| Code | Classification |
|---|---|
| 81.040.01 | Glass in general |
Adopted Standard
| Standards / Amendment / Corrigendum | |
|---|---|
| 1 | ISO 695:1991 |
Replaces
| Will Replace |
|---|
| PS 3907-2021 |
Scope
This International Standard specifies
a) a method for determining the resistance of glass
to attack by a boiling aqueous Solution of sodium
carbonate and sodium hydroxide. The resistance
is measured inversely by the loss in mass per
unit surface area of the glass;
b) a classification of glass according to the alkali
resistance determined by the method of this
International Standard.
NOTE 1 The method of test according to this International
Standard is also applicable