International Standard
ISO 9689:2025
Raw optical glass — Resistance to attack by aqueous alkaline phosphate-containing detergent solutions at 50 °C — Testing and classification
Reference number
ISO 9689:2025
Edition 2
2025-09
© ISO 2026
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Published (Edition 2, 2025)

ISO 9689:2025

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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2025-09
    Stage
    : International Standard published [60.60]
  • Edition
     : 2
    Number of pages
     : 11
  • Technical Committee :
    ISO/TC 172/SC 3
    ICS :
    81.040.10 
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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  5. 81
  6. 81.040
  7. 81.040.10
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