Olde Hornet
Well-Known Member
People Are Just Finding Out About the Major Difference Between PYREX and pyrex
Make sure you're using the right one!
So what’s the difference?
Products with PYREX in all uppercase letters is the real-deal bakeware made with the borosilicate glass that is high-temperature safe for ovens and microwaves. Some products will also include the Pyrex brand name (with a single capital letter) followed by a registered trademark.
Products with pyrex in all lowercase letters refers to a trademark kitchenware that is made with a variety of materials that isn’t borosilicate and soda-lime glass, and cannot be heated in a microwave or oven.