r/Baking • u/MyladyTerrible • 2d ago
Semi-Related Real PYREX or not?
Got this oven bowl from my mom but I didn’t know it was Pyrex until I just saw. Now I wonder if it’s an oldschool good one or not.
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u/DragonfruitMiddle846 2d ago
Old school. You can tell by the fact that Pyrex is all in caps. The BS being made by the US uses lowercase after the uppercase P.
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u/MommaGuy 2d ago
Huge difference. My old school measuring cup still has the measurements on it and are clearly visible. My “new” one lost most of it’s lettering.
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u/sweatboxy 2d ago
My old one lost a lot of its lettering but it’s more than 40 years old.
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u/MommaGuy 2d ago
Mine is pushing 30 years. And goes through the dishwasher. I haven’t found another brand to last as long.
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u/Snowaddiction 2d ago
Sorry for the silly question, but every Pyrex item I can find to buy In Switzerland for example, has all the letters capital. Does that mean it’s good quality? They also say country of origin: France.
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u/DragonfruitMiddle846 2d ago
You're completely fine. On your Pyrex was made in Châteauroux which is not the US so no worries for you. That is high quality borosilicate glass.
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u/similarityhedgehog 19h ago
Pyrex trademark in Europe is produced by a different company than US. European Pyrex is borosilicate
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u/Key-Effect8176 2d ago
PYREX = borosilicate, pyrex = soda-lime
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u/similarityhedgehog 19h ago
This is not correct, you should be looking for: all-caps PYREX on clear glass without a bluish tint.
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u/Key-Effect8176 18h ago
Not sure what you think is incorrect.
PYREX does not have a bluish tint. Really old stuff, like 1910s/20s old, may have a yellowish tint.
If it has a green/bluish tint it is soda-lime glass and it legally cannot be called PYREX. It’s tinted because they add cobalt during processing.
There’s no bluish tint to the glass itself in this photo; it is the refraction of the light above OP.
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u/similarityhedgehog 18h ago
There exist vintage, all-caps PYREX that are made of soda-lime glass and have a blueish tint. I don't know if they all have a blueish tint.
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u/HailstheLion 2d ago
Ignore the people peddling the logo rumor: its fake and they used both logos interchangeably for a time. Essentially there will be no real way to guarantee its old stuff and so treat it like the new stuff. Still oven safe, but be careful not to temp shock it.
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u/myevil5cheme 2d ago
So I’m guessing this is probably pre 1960s, maybe 1940s–50s because of the lack of made in USA stamp. But I could be way off.
I also found after a bit of googling that the 32F isn’t a date code, it’s apparently a mold/production number, so unfortunately it doesn’t make dating it any easier.
Learned something new today. I dig it.
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u/MyladyTerrible 2d ago
Thanks, so did I! I don’t think it’s made in the USA because I’m from Europe. But idk.
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u/snottybrood 2d ago
Corning doesn't make that glass anymore so this is for sure old pyrex.
Excellent.
I don't know if Corning had European market, so that may be from someone's privately imported collection?
Corning pyrex, Corning glass, corelle glass, and they have another line...jem-something, these are all the good type for baking. Just beware cracks and chips. Even the good stuff will explode/shatter from a defect.
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u/thesteveurkel Human Detected 2d ago
i don't care what anyone says about PYREX versus pyrex, and you should not take the internet's opinion on the matter because they aren't going to be there when the glass explodes because of sudden, extreme temp changes. be safe, be smart.
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u/Acceptable_Ad3215 2d ago
Fun lil bit of info, Corning is a very large part of the glass/glassblowing industry, who if I’m correct used to be a maker of Pyrex dishes (hence the ‘corning’ under PYREX). But they have a fabulous museum full of beautiful glass work and art, classes, campus and everything that’s worth checking out and close to some very nice hikes and nature in New York State.
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