Are there different grades of borosilicate glass? Does it depend on the amount of silica in the glass?

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Posted by Steve K on January 6, 2020

There is only one type of borosilicate that we know of. There are many manufacturers and they all act slightly different.

German – Shott

USA – Old Pyrex and US 33

The Czech Republic – Simax

Chinese –

Indian –

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Updated on January 6, 2020