20.20 20 shk 2026
ISO
ISO/TC 172/SC 3
International Standard
This document specifies a method for testing the resistance of raw optical glasses to attack by aqueous alkaline solutions at 50 °C and a classification of optical glasses according to the aqueous alkaline resistance (alkali resistance) determined by this method.
PUBLISHED
ISO 10629:1996
IN_DEVELOPMENT
ISO/WD 10629
20.20
Working draft (WD) study initiated
20 shk 2026