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Depending on the capitalization.

The good stuff is PYREX.

It's not that simple. https://www.snopes.com/fact-check/exploding-pyrex/

> What's Undetermined

> Whether Pyrex switched from using borosilicate glass to tempered soda lime glass only after Corning sold the brand to World Kitchen in 1998.

…

> In a January 2011 article on glass bakeware, Consumer Reports stated that they were unable to determine exactly when major U.S. manufacturers (including Pyrex) switched

That’s the most amount of word salad garbage I’ve ever seen on snopes.

The government hasn’t determined that soda lime glass is unsafe? Shocking.

I wonder why chemists use borosilicate? Hmm.

You can still get it in America from a company called icedteapitcher. It’s the made-in-France true PYREX and is metric.

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