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NBN ISO 8424:2023
Raw optical glass — Resistance to attack by aqueous acidic solutions — Test method and classification
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Summary
This document specifies two methods for testing the resistance of raw optical glasses to attack by aqueous acidic solutions and defines a classification of optical glasses according to the acid resistance determined by these methods.
The surface method tests the resistance of the polished plate-shaped optical glass to attack by aqueous acidic solutions at 25 °C for a specified time and indicates the class determined by this method as “SR-S”.
The powder method tests the resistance of crushed granular optical glass to attack by an acidic aqueous solution at above 98 °C for 1 h, and indicates the class determined by this method as “SR-P”.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 12/21/2023 |
| Page Count | 26 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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21/12/2023
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