• BigFig
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    62 years ago

    And ruined the brands they did have, example pyrex vs PYREX.

    • Admiral Patrick
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      22 years ago

      I just learned about that difference not too long ago. Looked in my kitchen, and yep, “pyrex”.

      • BigFig
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        2 years ago

        Absolutely! PYREX is borosilicate glass. Very durable and especially good at sharp temperature changes e.g. a food container straight from the fridge to the microwave, or hot leftovers put away in the fridge.

        pyrex all Lowercase is sodium glass, very weak but malleable and easier to mold into shapes, also cheaper. Does not hold up to sharp temperature changes and will actually crack or worst case explode.