19/30395378 DC - BS ISO 720. Glass. Hydrolytic resistance of glass grains at 121 degrees C. Method of test and classification

19/30395378 DC

BS ISO 720. Glass. Hydrolytic resistance of glass grains at 121 degrees C. Method of test and classification

Status : Current, Draft for public comment   Published : December 2019

Format
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Format
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This International Standard specifies

  1. a method for determining the hydrolytic resistance of glass grains at 121 °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 may also be expressed by the amount of sodium oxide equivalent to this volume of acid;

  2. a classification of glass according to the hydrolytic resistance determined by the method of this International Standard.

This International Standard is intended for use on the more resistant types of glass, like i.e. borosilicate glass. For the less resistant glasses, like i.e. soda-lime, the method specified in ISO 719 is preferable.

NOTE

It is emphasized that there is no exact correlation between the classification laid down in this International Standard and that laid down in ISO 719, and it is, therefore, essential to identify which classification is being used.




Standard Number19/30395378 DC
TitleBS ISO 720. Glass. Hydrolytic resistance of glass grains at 121 degrees C. Method of test and classification
StatusCurrent, Draft for public comment
Publication Date02 December 2019
Normative References(Required to achieve compliance to this standard)ISO 565, ISO 648, ISO 13130, ISO 719, ISO 3696, ISO 3819, ISO 1773, ISO 385
Informative References(Provided for Information)ISO 4802-1, ISO 3696
International RelationshipsISO/DIS 720
Draft Expiry Date21 January 2020
DescriptorsTesting conditions, Hydrolytic resistance, Test equipment, Laboratory glassware, Particulate materials, Solvent-resistance tests, Chemical analysis and testing, Designations, Chemical-resistance tests, Boiling tests, Temperature, Grades (quality), Water, Specimen preparation, Leaching, Dimensions, Glass, Volumetric analysis
ICS81.040.01
Title in FrenchVerre — Résistance hydrolytique du verre en grains à 121 degrés C — Méthode d'essai et classification
CommitteeCH/212
PublisherBSI
FormatA4
DeliveryYes
Pages15
File Size346 KB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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