Chemiker wrote:

> Some posters said that certain manufacturers had stopped producing
> their wares in Borosilicate Glass and went back the the cheaper Soda
> Lime glass, which does not tolerate temperature changes as well.
> Worthy of note is that the Anchor Hocking company is named among the
> guilty, as well as World Glass, who apparently bought some of
> Corning's Pyrex plants (if I understood the article properly).


FYI-
One of the best places around here to get the old classic borosilicate
glass cookware are the antique/junk type shops. Often at a remarkably
low price! If anyone wants to find some, that's the place to go!