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Quote:

Originally Posted by corky (Post 32849959)

No, that should be fine. Just avoid extreme temp changes and you will be ok. I use it all the time and my mom used it her whole life. I wouldn't put it under the broiler though or over 400 in the oven.

I routinely cook chicken in mine at 425-450 (depending on thickness). Never had an issue — I do let it cool down before washing to avoid extreme temp changes.

Quote:

Originally Posted by chococat (Post 32852143)

My experience working with Pyrex lab glassware is that it shatters under two specific circumstances- dry glassware over a direct heat source (it's totally fine if there's a liquid in the vessel since the liquid modulates the heat and prevents thermal shock) and putting a raging hot beaker of water on a cold wet countertop resulting in downshock (if you put it on a towel it's fine). Even under these conditions, Pyrex glass shatters very rarely.

And I have read that it's okay to put frozen food in a Pyrex container directly into a pre-heated oven since the food absorbs the heat transmitted into the glass. Ultimately it's about the speed and evenness of the temperature changes (not the actual temperature) that causes shattering. YMMV.

Lab glassware is still borosilicate, while consumer products are not. Lab stuff is the old formula, or at least closer to it.

Quote:

Originally Posted by M60_to_LGA (Post 32852054)

Thanks. So was it like the safety glass in a car window? My great fear is that it explodes in shards. Did the bowl give any warning that it was going to shatter, or did it just go boom all of a sudden? I hope you didn't get injured!

I'm probably overthinking this, due in large part to generalized anxiety about covid and work and life ...

Pieces went everywhere so it did not remain intact like a windshield, but there were no shards. The bottom of the bowl was a milky white color, I assume because of the temperature. That was the only indication something was wrong. No injuries, thank goodness. The rim was still cool enough to touch, so when it shattered, the rim actually remained as one piece in my hands.

Well, I used the pyrex for the first time in the oven tonight, and both it and I remain in one piece. Achievement unlocked.

Quote:

Originally Posted by M60_to_LGA (Post 32867694)

Well, I used the pyrex for the first time in the oven tonight, and both it and I remain in one piece. Achievement unlocked.

big yay! Hope you loved your food :-)

Quote:

Originally Posted by M60_to_LGA (Post 32849932)

Thanks. That's comforting. I'm a bit wary of glass, having cut my hand pretty badly years ago while washing dishes in the sink. I have one recipe that calls for mixing up a rice/bean/chile concoction, then pouring in boiling water, and pouring all of that into a baking dish for cooking in the oven. Does that sound like a bad idea?

I have Pyrex that's 30+ years old, and some I bought last summer, and probably use a piece of it 7 or 8 times a week. I have a couple basic rules: don't put it from freezer to hot oven, don't put it hot w/ hot food into fridge or freezer - allow it to cool a little. If you bang it against something when you're handling it, inspect it very carefully for tiny cracks - I've read that pieces w/ any degree of cracking are more likely to explode.

Also, I would avoid pouring very hot liquid into a piece just out of the fridge or freezer, but if you're mixing room temperature ingredients in a room temp container and pouring in boiling water, I would not expect problems.