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Modern Pyrex is ordinary glass, mostly, and sometimes strengthened glass. Old Pyrex was borosilicate glass.
by burnt-resistor 2y ago
Modern Pyrex is ordinary glass, mostly, and sometimes strengthened glass.
Old Pyrex was borosilicate glass.
- moolcool 2y agoPyrex the brand switched to soda lime glass in North America, but you can still find borosilicate glass kitchenware from different vendors.
- quesera 2y ago> Modern Pyrex ... Old Pyrex Most conveniently differentiated by the branding on the product. All caps "PYREX" is the classic (high quality) borosilicate stuff. Titlecased "Pyrex" is the modern ordinary glass stuff.