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Cool cool cool but all post-1998 Pyrex is trash
Pyrex was introduced in the late 1800s, & was revolutionary! It was made of tempered borosilicate — a glass variant that, notably, could handle extreme temperature fluctuations without just spontaneously shattering into terrifying stabby shards, as regular glass is wont to do
This is tremendously useful if you're in a lab setting, or in a kitchen. Being able to see hot things through transparent walls is helpful! Especially if you aren't worried about being stabbed by spontaneously projectiling stabby shards!
The problem is that "Pyrex" is a brand name, not actually a synonym for borosilicate — borosilicate is more expensive than regular tempered-lime glass, AND the company that made Pyrex lost the exclusive patent in the 1930s, so—
hello, capital incentive! In the 1950s, Pyrex started adding some tempered-lime products to their home cooking line, and in 1998 *all* Pyrex cooking products officially switched to soda lime glass (oops that's what I've meant to say, not tempered lime) instead of borosilicate
The lovely folks at Pyrex are swift to point out that their soda lime glass is heat-tempered! So in theory it's more durable than plain ol soda lime glass, in theory less susceptible to spontaneous projectile stabby shard syndrome! But it ain't borosilicate, so imo it ain't shit.
Pyrex still makes borosilicate glassware under their "Laboratory Glassware" line, which you can find online and at science supply stores. There are also terrific online resources for identifying vintage Pyrex and IDing whether it's borosilicate or soda lime
Pretty much it's The Old Céline of kitchenware
I am a disgusting secret hypebeast who owns multiple Supreme-branded kitchen products including their ridiculous floursack dishtowels so please take my deeply judgmental opinion on this Supreme measuring cup as gospel, thank u
Oh also you can buy borosilicate cookware ANYWHERE, it's totally affordable, it just won't be Pyrex! Make sure the product description explicitly says it's borosilicate. Quality over brand name in the kitchen always, especially when projectile stabby shards are in the balance!!!
Here's useful resource if you decide to go vintage Pyrex hunting (I now own so many vintage Pyrex measuring cups that I consider intentionally blowing up my spot to be an act of self-preservation) pyrexcollector.com/dating.php
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