Correct me if I got anything wrong, TA!
this post was submitted on 24 Oct 2023
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That’s because Pyrex sold pyrex. There’s a difference between the capital and lowercase “p.” Actual Pyrex with the capital “P” is supposedly the original quality. Anchor Hocking is like pyrex, lowercase.
I could be remembering wrong but didn't How To Cook That disprove that? Either way almost all of the uppercase P pieces of cookware ended up being borosillicate anyway
There is a difference between "pyrex" and "PYREX", but the difference is which company owns it rather than necessarily what it's made of.
However there is truth to it. European PYREX is now exclusively made from borosilicate glass (the original material). There is older PYREX brand stuff made of other materials, but new stuff is all borosilicate. All pyrex glass stuff is now soda-lime glass instead of borosilicate.
Basically, if you're buying new, the brand is a fine indicator. But if you're buying anything second hand, the logos won't help you as all three variants of the branding (Pyrex, PYREX and Pyrex) have made products with both materials at various times.