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ISO 719:1985

Glass -- Hydrolytic resistance of glass grains at 98 degrees C -- Method of test and classification

This standard has been reviewed and then confirmed in 2011 
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The principle, reagents, apparatus and 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. For five classes of grain the limit values in the test are listed.


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