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Full Description

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”.
 

Document History

  1. ISO 8424:2023

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    Raw optical glass - Resistance to attack by aqueous acidic solutions - Test method and classification

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  2. ISO 8424:1996


    Raw optical glass - Resistance to attack by aqueous acidic solutions at 25 degrees C - Test method and classification

    • Historical Version