Evidently this problem has escalated recently. The old Pyrex from years ago was a borosilicate glass.
The new Chinese Pyrex (WalMart is a main outlet for it) is
soda lime glass...which is less heat tolerant or temperature safe.
What is alarming is that the reports, and I only read a smattering of them since there are SO MANY.... report explosions with new product at room temps and some just sitting on the counter!
Snopes.com--
http://www.snopes.com/food/warnings/pyrex.asp
I've always used glass, Pyrex and Visions because there they are not metal, and supposedly safer for less contamination of food.
Now I don't know what to think anymore! All of mine are OLD as well, like yours Lara.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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