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ISO 9689:2025

Raw optical glass — Resistance to attack by aqueous alkaline phosphate-containing detergent solutions at 50 °C — Testing and classification

Publication date:   Sep 2, 2025

General information

60.60   Standard published   Sep 2, 2025

ISO

ISO/TC 172/SC 3 Optical materials and components

International Standard

81.040.10   Raw materials and raw glass

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Scope

This document specifies a method for testing the resistance of raw optical glasses to attack by aqueous alkaline phosphate-containing detergent solutions (phosphate solutions) at 50 °C and a classification of optical glasses according to the aqueous alkaline phosphate-containing detergent resistance (phosphate resistance) determined by this method.
This document is applicable to samples of raw optical glasses.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 9689:1990

NOW

PUBLISHED
ISO 9689:2025
60.60 Standard published
Sep 2, 2025