What's The Difference Between PYREX And Pyrex?

There is a big difference between PYREX and pyrex even though they are spelt the same way — we’re not talking about the capitalization
There is a big difference between PYREX and pyrex even though they are spelt the same way — we're not talking about the capitalization. They appear on the glassware but there are consequences if they are spelt in uppercase or lowercase. What could be the difference between these terms and how can they affect safety in your kitchen? Keep reading to find out.

Old Pyrex that we've used for years (left) vs new Pyrex that we've only been using for a few months (right). SMH my head. : r/mildlyinfuriating

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