Consumer Reports Tests Glass Baking Dishes

PITTSBURGH — Late last year, Consumer Reports analyzed more than 150 reports of glass baking dishes suddenly shattering.

Most involved Pyrex and Anchor Hocking dishes.

Since then, Consumer Reports has heard of more than 100 new incidents.

Though these reports represent only a tiny fraction of the hundreds of millions of pieces of glass bakeware in American kitchens, Consumer Reports is urging the government to investigate.

Barbara Trojanowski says she only uses metal pans after her glass baking dish shattered while it was sitting on top of a heated oven.

“All of a sudden I heard a bang, I felt it hit the back of my leg. The blood was pouring out all over the place,” Trojanowski said.

Barbara’s Achilles Tendon was severed. After surgery, she can walk again – but doubts she’ll be able to ever gold or dance again.

Consumer Reports has analyzed 145 new reports of glassware shattering after its first investigation last December.

And it’s not just bakeware that’s shattering.

“There were eight reports involving glass bowls and seven involving glass measuring cups. Some shattered when hot water was poured into them. And others shattered in the microwave when used to heat foods, even though they’re labeled microwave-safe,” Andrea Rock of Consumer Reports said.

Pyrex and Anchor Hocking glass bakeware are now made of a type of glass called “soda lime” that has been heat-strengthened. Decades ago they were made of borosilicate.

Consumer Reports laboratory tests compared the two types of glass bakeware. New pans were subjected to extreme heat then put on a wet, granite countertop – conditions likely to cause breakage and contrary to the manufacturer’s instructions.

Ten out of ten times the “soda lime” bakeware broke. But the borosilicate dishes did not break – although most did after baking at slightly higher temperatures.

Among the most important safety precautions – never place dishes on burners or under broilers and be sure to place hot glassware on dry potholders. Or simply use metal pans in the oven, as Barbara Trojanowski does.

Barbara is suing Anchor Hocking, which made the glassware she used. The company says it has been advised to not discuss legal matters. Both Anchor Hocking and the American manufacturer of Pyrex – World Kitchen – say it’s important to follow safety warnings.

More Consumer News
Consumer Reports: Full Report

  • Jane Cricks

    that was a great time killer……

  • LuAnn Boltze

    I had a baking dish explode in the oven. What a mess that was! It was a Pyrex dish full of peach cobbler.

  • John

    Yes, a minute fraction of bakeware shatters and CR wants the gvt involved! YEA!!! What a mess this country has become.

  • Heloise

    I’m still using my grandma’s cast iron dutch oven…… never exploded. Thanks KD this is another reason people don’t watch after the weather report

  • Doober

    How about more defined information?
    What is the exact percentage of incents out of the millions of pieces in use?
    What is considered Extreme Heat? (Synonyms for extreme… Dangerous, Life-threatening, Risky, Punishing)
    What is a Slightly Higher Temperature?
    When is the last time a consumer baked sand?
    The tests were conducted contrary to manufactures safe use instructions?

    Consumer Reports should be investigated for how they conduct the testing as well as the generic information.

    It’s easy to assume that a product is at fault, but the reality is that people are often just as, or even more.

  • Sandy Claus

    My Family Watched this News clip last night. As a Family we ask you: What is your Recipe for Sand? What temperature and how long do you Bake your sand?

    And if you where ever on the beach when the wind was strong You must say…
    I hope your sand taste better than beach sand.

  • Consumer Reports: Glass Baking Dishes « CBS Pittsburgh

    […] Full Story Share this No comments // […]

  • Stu

    Marty Griffin is an idiot

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