Pyrex was first introduced in 1915 as a line of clear, low-thermal-expansion borosilicate glass whose resistance to chemicals, electricity, and heat made it ideal for laboratory glassware and kitchenware.

Jan 19, 2023 · Learn what Pyrex is made of and the difference between uppercase and lowercase Pyrex to determine what kind of glassware you have for safe handling.

The idea of Pyrex came out of this new approach to recipe development. The original Pyrex glass is known to scientists and artists as a borosilicate, “boro” for short. The main ingredients in the glass …

All Pyrex that is created for laboratory use is made from borosilicate glass in order to have all of the characteristics of traditional Pyrex: unbreakable, able to withstand extreme temperature changes, …

Mar 17, 2025 · Expert collectors and appraisers answer all your Pyrex questions, including how much its worth and what the most desirable patterns are.

Pyrex, (trademark), a type of glass and glassware that is resistant to heat, chemicals, and electricity. It is used to make chemical apparatus, industrial equipment, including piping and thermometers, and …

4 days ago · If you love scouring through the kitchenware shelves in your local thrift store, there's one type of vintage Pyrex set that you should always snap up.