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Norm

ISO 719:2020

Issue date: 2020 09 11

Glass — Hydrolytic resistance of glass grains at 98 °C — Method of test and classification

This document specifies a) a method for determining the hydrolytic resistance of glass grains at 98 °C. The resistance is measured and expressed by the volume of acid r...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 8 Pages
Language:
English

This document specifies

a) a method for determining the hydrolytic resistance of glass grains at 98 °C. The resistance is measured and expressed by the volume of acid required for titration of the alkali extracted from the unit mass of glass, and can also be expressed by the amount of sodium oxide equivalent to this volume of acid, and

b) a classification of glass according to the hydrolytic resistance determined by the method of this document.

This document is intended for use on the less resistant types of glass, such as soda-lime glass.

NOTE 1 For the more resistant glasses, e.g. borosilicate glass, the method specified in ISO 720 is more suited.

NOTE 2 It is emphasized that there is no exact correlation between the classification laid down in this document and that laid down in ISO 720, and it is, therefore, essential to identify which classification is being used.

ISO 719:2020
2020 09 11
Glass — Hydrolytic resistance of glass grains at 98 °C — Method of test and classification
Norm
ISO 719:1985
1985 10 03
Glass — Hydrolytic resistance of glass grains at 98 degrees C — Method of test and classification
Norm
ISO 719:1981
1981 10 01
Glass — Hydrolytic resistance of glass grains at 98 degrees C — Method of test and classification
Norm