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PYREX glassware is made with borosilicate glass, offering superior heat resistance. pyrex glassware in North America uses tempered soda-lime glass, which is less heat-resistant. Proper care prevents ...

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Pyrex cookware has been around for 100 years, ever since creator Corning Glass Works determined the heat-resistant glass used for rugged railroad lanterns could also be used to bake a lovely sponge ...

Pyrex, like all brands of glass bakeware, is subject to breakage due to thermal shock; Pyrex glass bakeware was originally made from borosilicate glass and is now made from tempered soda lime glass.