There are very few products made so well that the brand becomes a generic name for everything similar. Pyrex® is one of the few.
Pyrex® borosilicate glass was developed in the early years of the 20th century to satisfy the demand for a material with high thermal resistance.
This property, coupled with excellent chemical durability, makes Pyrex® the ideal material for laboratory products.
Today more than 800 items of glassware carry the famous Pyrex® name including beakers, bottles, flasks, dishes and test tubes, all manufactured to the same exacting quality standards.