Pyrex, like all brands of glass bakeware, is subject to breakage due to thermal shock; Pyrex glass bakeware was originally made from borosilicate glass and is now made from tempered soda lime glass.

Add Yahoo as a preferred source to see more of our stories on Google. A pyrex measuring cup on top of a vintage pyrex bowl - Noderog/Getty Images Pyrex is the vintage dishware brand you should always ...