Pyrex and Anchor Hocking are household names in cookware and have been for generations in the United States, most people have at least one piece in their home. Some people may know the Pyrex brand as borosilicate glass, but Pyrex in the States is now made from tempered soda-lime glass. Some of you might be asking, “What’s the difference? Does it really matter?” The answer to that question is YES. Borosilicate glass is a much higher quality glass than soda-lime glass. Pyrex especially has been under scrutiny as claims from consumers have sprung up about their cookware spontaneously exploding in ovens, on counters and even on dinner tables. December 25, 2010, Debbie Parker was sitting down to a Christmas meal with her family after putting her Pyrex casserole dish on the table; taking a family photo when suddenly her dish exploded!  The issue has become so huge that consumer reports have even done a video on the difference between soda-lime and Borosilicate glass .
So where can you get Borosilicate glass in the States? The answer is a Czech company, Kavalierglass a.s. , under the brand Simax that is trying to break into the market in the United States. This is by no means a new company; they have been in business for 175 years- making the highest quality laboratory grade kitchen glass in the world. Yes, I do mean in the whole world. There are plenty of other companies around that make borosilicate glass, however (to put it simply) Simax uses the same specifications for its kitchen glassware as it does for its laboratory glassware. Other companies cheat on their kitchen glass and use less boric acid in their mixtures, which weakens the glass.
You’re probably thinking that Simax glass is unaffordable because of its quality; however this is not the case. Simax glass pricing is very comparable to that of its lower-grade competitors: Pyrex and Anchor Hocking. Simax does not only produce cookware and bakeware, but all kinds of kitchen accessories: teapots, cups, pitchers, carafes, and even baby bottles- all made of the highest quality glass you can find.
Currently, retail selection in the States is spotty, however many products are now available on Amazon.com and Ebay. If you care about healthy and safe cooking, ask your favorite retailer to stock Simax glassware.
 Consumer Reports, Glass Bakeware that Shatters, http://youtu.be/UyhdMa1ikKM (Dec 7, 2010)
 JoNel Aleccia, Kitchen calamity: Reports of shattering cookware on the rise, http://todayhealth.today.com/_news/2012/12/21/16049242-kitchen-calamity-reports-of-shattering-cookware-on-the-rise#.UNSaKZXy39Y.email (Dec 21, 2012)