Unexpected Moments with Pyrex: When It's Not the Pyrex You Know
In the realm of kitchen essentials, Pyrex glassware has long been a trusted staple. However, there's been a bit of confusion surrounding the composition of modern-day American Pyrex, and we're here to clear that up.
Contrary to popular belief, modern-day American Pyrex for the kitchen is not borosilicate glass. Instead, it's made of soda glass. This switch from borosilicate to soda glass occurred before the formulation switch and was a decision made by the manufacturers.
The European version of Pyrex glassware, branded uppercase as PYREX, retains the borosilicate formulation. This means that it can handle high temperatures and withstand extreme thermal shock better than the American version.
American Pyrex, branded in lower case as pyrex, is a soda glass and may not withstand extreme thermal shock as well as the borosilicate version. Nevertheless, most users of either version in the kitchen are unlikely to subject their glassware to such conditions that could break the soda version.
For users who frequently subject their glassware to extreme thermal shock, seeking out an older PYREX dish could be a good move. These dishes, which retain the borosilicate formulation, could be a good choice for those who push the limits of their glassware.
Pyrex glassware, even in its soda glass form, can still be a fine pie dish for most users in the kitchen. It's important to note that production of Pyrex glassware in America was originally by Corning, but after Corning stopped making consumer Pyrex products, the brand and production in the US were taken over by other companies such as World Kitchen (now CORELLE BRANDS). Corning still produces laboratory Pyrex glassware, but consumer kitchenware Pyrex is now manufactured by Corelle Brands in the United States.
In conclusion, while modern American Pyrex is made of soda glass, the European version retains the borosilicate formulation. If you're interested in learning more about glass, there are resources available to help you understand the differences and properties of various types of glass.
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