Pyrex, like all brands of glass bakeware, is subject to breakage due to thermal shock; Pyrex glass bakeware was originally made from borosilicate glass and is now made from tempered soda lime glass.
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Many a home baker has wondered whether they can put their Pyrex kitchenware into the oven without it shattering. The good news is that Pyrex is sometimes fit for baking — but there's a trick to ...
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Are Pyrex lids oven-safe?

Both glass and plastic Pyrex lids are microwave-safe, though plastic lids should always be vented to prevent pressure buildup. Glass lids are usually dishwasher safe, but plastic lids may warp or ...