Historical

ISO 9689:1990

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

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.

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International Organization for Standardization [iso]

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