ISO 9689:1990
Raw optical glass; resistance to attack by aqueous alkaline phosphate-containing detergent solutions at 50 °C; testing and classification

Standard No.

ISO 9689:1990

Release Date

1990

Published By

International Organization for Standardization (ISO)

Latest

ISO 9689:1990

Scope

Specifies a method for testing the resistance of raw optical glasses and a classification of optical glasses according to the aqueous alkaline phosphate-containing detergent resistance (phosphate resistance) determined by this method.

ISO 9689:1990 history

• 1990 ISO 9689:1990 Raw optical glass; resistance to attack by aqueous alkaline phosphate-containing detergent solutions at 50 °C; testing and classification