What is borosilicate glass

The international standard ISO 4802. 1-1988 "Water resistance of the inner surface of glassware and glass containers Part 1: Determination and classification by titration" defines borosilicate glass (including neutral glass) as containing diboron trioxide (B -2O-3) 5～13% (m/m) of glass, but the ISO 12775 "Classification of Glass Composition and Test Methods for Normal Mass Production" issued in 1997 defines borosilicate glass (including neutral glass). Boron trioxide (B-2O-3) greater than 8% (m/ m)