The principle, reagents, apparatus and the procedure are specified. The resistance is expressed by the volume of acid required for titration of the alkali extracted from the unit mass of glass. The permissible range of the values obtained and the limit values in the hydrolytic resistance grain test are listed.
Revises
ISO 720:1981
WITHDRAWN
ISO 720:1985
95.99
Withdrawal of Standard
11 sht 2020
Qelq. Qëndrueshmëria hidraulike e kokrrizave të qelqit në 121 gradë Celsius. Metoda e provës dhe klasifikimi
60.60 Standard published
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