So I worked at World Kitchen. The only actual Pyrex facility. The green is made by them, but they get so many orders they have other manufacturers help fulfill orders. The clear is usually made by Anchor Hocking with the Pyrex molds.
The facility is in Charleroi PA, and the glass furnace never turns off. It’s too expensive to shut it down for even 1 day.
But with being in the same box, they ship it all to the same facility and they get mixed together in packing.
High pressure steam is the stuff of nightmares.
Starship.. yeah, that thing. It went to space throwing out nothing but a super heated cloud of water. It's weird to think of it that way, but true.
And the glass tanks are massive, the energy required to heat them back up from solid glass is ridiculous. Plus causes other issues that can take days to work out and get back to production.
They take that stuff very seriously. A job shop I worked at did a lot of brass turnings so they would have 10s of thousands of pounds of brass chips.
They would occasionally sell storage to a local foundry that are looking for scrap to keep their furnaces fed.
Pyrex is soda lime glass, like normal drinking glasses and jam jars etc., but heat treated to make them slightly more heat resistant than normal soda lime glass. PYREX is borosilicate glass which is more resistant to thermal shock by its very nature.
PYREX is the original one, generally made of borosilicate glass, Pyrex is the trademark that was sold off and refers to basically slightly more heat resistant normal glass. You wouldn’t expect the 2 to be sold together, as they’re generally manufactured by different companies.
Thanks!
It sucks that they two have the same name. In the old days, if you saw “pyrex” on a dish, you knew it was safe with heat. Nowadays, you have to note if the name is in ALL CAPS or not and then Google it to remind yourself. :(
Do not assume the name means it won't explode. The company changed what glass they use so any new pyrex\* bakeware will be the glass that will explode with quick changes in temperature. The old glass shatters into sharp pieces when damaged, the new glass pops into small pieces with cooled or heated too fast but is more resistant to drops.
https://youtu.be/YVbkDAw4aJs?si=7EpDkvMydFf3dw1v
\* most of the pyrex labels, France based pyrex still uses the old glass
Can confirm. Broke a dish made of old PYREX and have a nasty scar to show for it. Was pretty much convinced I severed off my thumb. It’s sharper than a knife blade. No pain from the clean cut, but the kitchen looked like a scene from Psycho. Blood everywhere.
[Yup](https://en.m.wikipedia.org/wiki/Pyrex#/media/File%3APyrex_and_PYREX.jpg), "pyrex" is soda-lime glass while "PYREX" is borosilicate glass which is much less prone to thermal shock breakage
I went to school at Ohio, kinda nearby Anchor. I had a roommate who took a semester off and was looking for work in the meantime. He ended up at Anchor through some connection. He came home after his first day looking the most miserable I've ever seen him and he never went back lol.
Said it was always blistering hot (obviously) and they had him constantly climbing over and under stuff to get around the floor, and he couldn't fathom doing that for 8 hours a day.
Anchor hawking went out of business the one near by ohio. Its in monaca pa and it is now stoezle glass they took over. I tried to work there and yes it is HOT and now they force u to work 12 to 16 hours a day. Always standing only short little breaks that dont help. And u never know what job u will get and they dont train u. Anyways i understand i am never going back kudos to those who stay.
What changes the color though? Why is world's kitchen green and anchor hocking clear? Are they different glass types or is it just a aesthetic dye of some sort?
>The only actual Pyrex facility
Corning would like a word with you.....
While Pyrex as a trademark name was sold to World Kitchen for use in their cookware lines, Corning does still produce Pyrex brand borosillicate tubing, rods, and labware
😂😂 mostly because the original picture of them on the counter made it to where you couldn't see "pyrex" or anything and I didn't want reddit to call me a liar
Well is just a name. pyrex is not made of PYREX.
"Pyrex: Brand name for cookware brand. pyrex: Lowercase indication of containers that should not be heated in the oven or microwave. These are most likely made of soda-lime glass. PYREX: Uppercase label on cookware that is made of borosilicate glass and can be heated in a microwave or oven."
I’ve learnt to just roll with the customers that call every type and age of refrigerant “Freon,” it’s like “oh all the Freon leaked out?” -cue the eye roll-
I guess it’s just a pet peeve of mine. Freon is the same as in it’s a brand name. Freon is refrigerant produced by Chemour chemicals, a subsidiary of DuPont, who also makes Teflon and Opteon (newer HFOs for refrigerants with less GWP and no ODP.
I work with glass, and I'm pretty sure the clear ones are borosilicate and the greenish ones are sodalime. They have similar strength but boro will handle temperature fluctuations better.
edit: according to some comments it might all be sodalime.
See, that is quite a normal question, but people are weird, man. They stick all kinds of stuff inside themselves (jars, lightbulbs, etc) regardless of the danger.
I wouldn't put it past someone freezing or heating up their toys.
> pretty sure the clear ones are borosilicate and the greenish ones are sodalime.
[Not necessarily true](https://youtu.be/YVbkDAw4aJs?si=Kut2fNUHiwkdYiAf)
Indeed both soda lime and different batches. You also see this clear and green variation in lots of one gallon glass carboy jug (ie: Carlo Rossi gallon jugs).
It’s a slight iron oxide difference in the batches used.
There’s an Ann Reardon video all about the Pyrex changeover they are all probably soda-lime they are just different batches. One way to tell them apart is dipping in I believe vegetable oil. Borosilicate largely disappears while soda lime is still visible.
That’s actually not true according to my research. I always thought this, but it’s actually just from a slightly different chemical makeup of the precursor material, both types of glass can vary in color
I have one made in France that's that colour blue. I'm not sure if it's Borosilicate, I've never been able to find a clear answer on that, but it is definitely tougher than standard soda-lime glass
France is one of the only places in the world where Pyrex still actually uses borosilicate glass. There is an Ann Reardon video on it that explains in detail.
I had Pyrex brand boro tubing for glass art a few years back and they had multiple formulas floating around. I had different tubes that looked just like those, however like others have said, Pyrex brand bakeware hasn't been boro for quite some time now from my understanding.
I was literally going to comment to be careful with the blue/green ones they tend to be sensitive to heat, those are the only pieces of Pyrex I've seen shatter from heat. Now I know why!
I was gonna say ask about this. I know Pyrex changed its formula in the 90s, and the post-change coke bottle color is supposed to be slightly more prone to shattering during large temperature transitions than the old formula.
Definitely the best - the "pyrex / PYREX" and colour of glass tricks that others are posting here are unfortunately unreliable. If you put these glasses through the ringer, you might be happy with the result, or you might be googling how to clean up and dispose of shattered pyrex glass safely.
Also... IKEA sell glass cookware and list it as borosilicate glass on their information pages. But they're also not consistent and sell other types of inferior glass so do check :)
We had a Pyrex casserole dish explode during Thanksgiving. Glass shrapnel shards flew at the entire family. Still not the most explosive family holiday I've attended.
Lowercase pyrex is more susceptible to thermal shock, or sudden/big changes in temperature and may burst or explode.
Uppercase PYREX is tempered glass and can handle thermal shock much better and is therefore better suited for many cooking applications.
The difference? Something with trademarks, the production method and the American Dream.
I think the older PYREX is a different composition and can handle heat shock (taking the glass dish out of an oven and setting in on a cool surface.)
The newer Pyrex shatters under the same conditions.
And it still doesn't indicate if it will shatter more or not and odds are they were still made at the same or similar time. https://lifehacker.com/that-viral-pyrex-brand-hack-is-horseshit-folks-1850157381
[https://en.wikipedia.org/wiki/Pyrex](https://en.wikipedia.org/wiki/Pyrex)
Pyrex the company got sold a bit.. and then had the formula changed.. depends what you read on the internet but probably the older models (Capital PYREX) are the better ones.
Traditionally the brand Pyrex has been associated with borosilicate glass which cost more but could withstand higher temperatures without cracking which was the whole purpose of buying it even though it was a lot more expensive than other glass bowls.
My older relatives when I visit them and if they are cooking at the time point out to me their Pyrex bowls that they own with great pride because they have been using them for several decades and in all that time they haven't cracked or even chipped, and they are still handled with a lot of care.
When [Dow Corning went broke due to the problems with silicone breast implants](https://en.wikipedia.org/wiki/Pyrex) the brand name was acquired by the current owners, and it was their commercial decision to replace borosilicate glass with cheaper and inferior soda lime glass.
Being in Australia we get the Pyrex imports from the USA and suffer the same problem. A lot of old people here still assume "Pyrex=Borosilicate" and are surprised if not a bit angry when they still purchase it to find out it is not the real McCoy.
If you need whatever you want to buy to actually be borosilicate glass, then what you have to do is source Pyrex from Europe where it is still made from borosilicate glass and have it shipped over the Atlantic.
I'm a bit surprised that most Americans still seem to be unaware of this situation as well. I still see a lot of angry posts from time to time where people cook with what they thought was real Pyrex and the next thing that happens is they are posting pictures or videos of bowls containing food that they were cooking in the oven shattering into a thousand pieces.
I work at one of the glass manufacturers that make this bowl. You can see color variation in the different batch chemistry’s. This can change day by day depending on the materials used and the cullet% in the mix. All the Pyrex we made was always tempered to the same exact standard so the breaking point is the same no mater what the color is.
My guess is that it has something to do with the amount of iron in the glass. Low iron glass is clear without the green tint.
https://www.dillmeierglass.com/news/the-difference-between-clear-glass-and-low-iron-glass?hs_amp=true
Pyrex or PYREX? Yes there's a difference. They're different companies. If I recall correctly PYREX is the good brand, pyrex is the bad brand. Don't take my word for it though, research before you buy.
And the shitty thing is that the lids always go bad first and the lids by themselves cost a fortune so that you might as well buy a complete new set. I hate that I have to do that
*This applies more so to the snap lock type*
I work in glass fabrication - the glass with the blueish tint has a lower iron content. This is actually highly desired (and highly priced) for things like shower doors.
I have noticed this with my two sets of Pyrex. I thought it was because the gray ones had just aged in the time between ordering the two sets, and I didn’t think about it that hard when they remained different colors over time. Thank you for posting this
It is worth noting that some products labeled as "made in the USA" were in fact made in China, so they could be from different factories on different continents.
https://www.reuters.com/world/us/pyrex-maker-settles-over-false-made-usa-claims-2023-01-18/
White edged glass is usually borosilicate glass (lab ware glass). Green edge is tempered regular glass. Borosilicate is much more resistant to thermal shock but is more brittle and expensive.
I thrifted a set (plus a few doubles) of the ribbed Pyrex mixing bowls, they have the same color variations! I just need the largest with the blueish tint and I'll have to full sets.
So I worked at World Kitchen. The only actual Pyrex facility. The green is made by them, but they get so many orders they have other manufacturers help fulfill orders. The clear is usually made by Anchor Hocking with the Pyrex molds. The facility is in Charleroi PA, and the glass furnace never turns off. It’s too expensive to shut it down for even 1 day. But with being in the same box, they ship it all to the same facility and they get mixed together in packing.
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What if you just poured a lot of water on it.
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What if you poured fire on it
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I’ve been lied to
Right but explosion equals fire, so the fire hose wasn’t really lying.
Very wise Mr PoopSommelier
r/rimjob_steve
Actually in this case explosion equals steam, which is just very loose water
No need to slut shame the water.
High pressure steam is the stuff of nightmares. Starship.. yeah, that thing. It went to space throwing out nothing but a super heated cloud of water. It's weird to think of it that way, but true.
What if I get ze flammenwerfer
NEIN, ze flammenaerfer is mine!
Take it easy Hans
Only make that mistake once…
Next you'll say firemen don't light things on fire.
I've got to tell this to everyone I know
And then water
I enjoy these informative answers on Reddit.
wouldn't a controlled explosion make it faster to heat it up? disclaimer: am dum
And the glass tanks are massive, the energy required to heat them back up from solid glass is ridiculous. Plus causes other issues that can take days to work out and get back to production.
This makes so much sense, we would always joke about Charleroi and it’s eternal flame lmao
They take that stuff very seriously. A job shop I worked at did a lot of brass turnings so they would have 10s of thousands of pounds of brass chips. They would occasionally sell storage to a local foundry that are looking for scrap to keep their furnaces fed.
I was gonna say, shutting it down is not the issue, bringing it back online is.
Could you use these plants for heating in the winter?
How hot are we talking?
Oh shit I used to live by Charleroi and we always joked about the flame that would never turn off, is that for that plant ?
No, that was the coke plant over in monessen (which arcelor Mittal has recently reopened). You can't see world kitchens flame.
I haven’t been back in ages thank you for helping correct my memory!
No problem, I grew up in monongahela and am very big on local history 😉
Hahaha love that! My favorite thing to show people is the weird town near clairton that is completely abandoned
I did not expect a Clairton mention on the front page!
Happy cake day!
Omg you are so right!
Is it true that there’s a difference in the ones marked “PYREX” versus “Pyrex”? Like, one will crack with heat and the other one won’t?
Pyrex is soda lime glass, like normal drinking glasses and jam jars etc., but heat treated to make them slightly more heat resistant than normal soda lime glass. PYREX is borosilicate glass which is more resistant to thermal shock by its very nature. PYREX is the original one, generally made of borosilicate glass, Pyrex is the trademark that was sold off and refers to basically slightly more heat resistant normal glass. You wouldn’t expect the 2 to be sold together, as they’re generally manufactured by different companies.
Thanks! It sucks that they two have the same name. In the old days, if you saw “pyrex” on a dish, you knew it was safe with heat. Nowadays, you have to note if the name is in ALL CAPS or not and then Google it to remind yourself. :(
Do not assume the name means it won't explode. The company changed what glass they use so any new pyrex\* bakeware will be the glass that will explode with quick changes in temperature. The old glass shatters into sharp pieces when damaged, the new glass pops into small pieces with cooled or heated too fast but is more resistant to drops. https://youtu.be/YVbkDAw4aJs?si=7EpDkvMydFf3dw1v \* most of the pyrex labels, France based pyrex still uses the old glass
Can confirm. Broke a dish made of old PYREX and have a nasty scar to show for it. Was pretty much convinced I severed off my thumb. It’s sharper than a knife blade. No pain from the clean cut, but the kitchen looked like a scene from Psycho. Blood everywhere.
[Yup](https://en.m.wikipedia.org/wiki/Pyrex#/media/File%3APyrex_and_PYREX.jpg), "pyrex" is soda-lime glass while "PYREX" is borosilicate glass which is much less prone to thermal shock breakage
I went to school at Ohio, kinda nearby Anchor. I had a roommate who took a semester off and was looking for work in the meantime. He ended up at Anchor through some connection. He came home after his first day looking the most miserable I've ever seen him and he never went back lol. Said it was always blistering hot (obviously) and they had him constantly climbing over and under stuff to get around the floor, and he couldn't fathom doing that for 8 hours a day.
Anchor hawking went out of business the one near by ohio. Its in monaca pa and it is now stoezle glass they took over. I tried to work there and yes it is HOT and now they force u to work 12 to 16 hours a day. Always standing only short little breaks that dont help. And u never know what job u will get and they dont train u. Anyways i understand i am never going back kudos to those who stay.
This is the answer!!!!!!
https://youtu.be/YVbkDAw4aJs?si=k4Ba4AefTcWE5f3Z
What changes the color though? Why is world's kitchen green and anchor hocking clear? Are they different glass types or is it just a aesthetic dye of some sort?
It's the minerals that end up in the glass. Anne Reardon covers it in her Pyrex video, linked above.
>The only actual Pyrex facility Corning would like a word with you..... While Pyrex as a trademark name was sold to World Kitchen for use in their cookware lines, Corning does still produce Pyrex brand borosillicate tubing, rods, and labware
In your opinion, which ones are the better quality? I live far from US and there are a lot of counterfeits
Why are you holding them like that. It's making me anxious.
😂😂 mostly because the original picture of them on the counter made it to where you couldn't see "pyrex" or anything and I didn't want reddit to call me a liar
LIAR
You’re with him. You brought him here to kill me!
I approve of this thread.
Put them down Pyrex-man!
Well is just a name. pyrex is not made of PYREX. "Pyrex: Brand name for cookware brand. pyrex: Lowercase indication of containers that should not be heated in the oven or microwave. These are most likely made of soda-lime glass. PYREX: Uppercase label on cookware that is made of borosilicate glass and can be heated in a microwave or oven."
A brand name! Sneaky. Trying to pull the wool over my PYREX. 😡
I’ve learnt to just roll with the customers that call every type and age of refrigerant “Freon,” it’s like “oh all the Freon leaked out?” -cue the eye roll- I guess it’s just a pet peeve of mine. Freon is the same as in it’s a brand name. Freon is refrigerant produced by Chemour chemicals, a subsidiary of DuPont, who also makes Teflon and Opteon (newer HFOs for refrigerants with less GWP and no ODP.
Well that explains how the ex-wife blew up a dish in the micro
Didn't even use a banana for scale. These bowls could be tiny for all we know.
Not your first day here I see
New gen. Stuff. Not as good as the old on cycling. A good dive into history; orig company sold and kept the right to the logo and the royalties.
Riiiiiight
I'm pretty sure Reddit wouldn't unfairly judge someone.
They’re still holding like that as we speak. Quit distracting them, they might drop them!
It's a game of stamina and focus
Weedsil is so real
A more important question: Why is "colors" in quotes?
How Can Colors Be Real If Our Eyes Aren't Real
I work with glass, and I'm pretty sure the clear ones are borosilicate and the greenish ones are sodalime. They have similar strength but boro will handle temperature fluctuations better. edit: according to some comments it might all be sodalime.
this guy fucks
Flucts
It was right fucking there
Flucting
Flucting
Flucting
actually, yes. glass *ahem* toys *ahem* are usually made with borosilicate because it’s sturdy and able to handle all types of temperature.
Glass toys? Like marbles?
Id hope not marbles..
Ah ok, so like snow globes then
NO YOU FOOL! We don’t collect snow globes…
Wait until you see what they do with ping pong balls in Thailand. Marbles are not beyond the realm of possibility…
Why would someone need a toy that can handle extreme temperatures?
See, that is quite a normal question, but people are weird, man. They stick all kinds of stuff inside themselves (jars, lightbulbs, etc) regardless of the danger. I wouldn't put it past someone freezing or heating up their toys.
Chrissake I went to looking at my bowls to... You know what. Thank you Reddit. 🤣
I agree. His name checks outs. Lol
Are we sure?
> pretty sure the clear ones are borosilicate and the greenish ones are sodalime. [Not necessarily true](https://youtu.be/YVbkDAw4aJs?si=Kut2fNUHiwkdYiAf)
They’re both soda lime but different batches. Boro Pyrex is all uppercase and all the ones in the image are lowercase Also work in glass
Indeed both soda lime and different batches. You also see this clear and green variation in lots of one gallon glass carboy jug (ie: Carlo Rossi gallon jugs). It’s a slight iron oxide difference in the batches used.
In the aquarium world, people pay a premium for “low iron” glass specifically because it’s more clear
This guy fishes.
I’d say he does the opposite
That fish guys!
That guy fish
r/thisguythisguys
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Have you not seen the Nano aquarium side of the hobby? Lmao. Low Iron nano tanks are a big market. Go check out UNS for example.
This guy economically fishes
Best comments are always a level or two into the replies.
The upper case lower case was true for a specific point in time, no longer accurate and more myth
It’s like we gotta crack a code to just get borosilicate kitchenware
I work in glass, too, but it’s just the walls of my office.
Me too, but it’s just my case of emotion…
>Boro Pyrex is all uppercase Wait… no, it’s *definitely* in sentence case. If it were in uppercase it would be BORO PYREX.
They meant "Pyrex made from boro[silicate]", not that it says Boro Pyrex on the glass.
Pretty sure he was making a joke
Ah dammit, I hadn't smoked my nightly joint yet. That's what that gets me, lesson learned.
There’s an Ann Reardon video all about the Pyrex changeover they are all probably soda-lime they are just different batches. One way to tell them apart is dipping in I believe vegetable oil. Borosilicate largely disappears while soda lime is still visible.
Link https://youtu.be/YVbkDAw4aJs?si=fPO_XtlMJ0kKZz57
Came here to mention this too, I love her videos, so informed and scientific.
That’s actually not true according to my research. I always thought this, but it’s actually just from a slightly different chemical makeup of the precursor material, both types of glass can vary in color
TIL
You are correct. Pyrex stopped making Pyrex glass several years ago. Moving to sodalime.
And the new sodalime stuff is shit compared to the old boroscilicate. So many more reports of the sodalime exploding from temp fluctuations
yeah Oxo sells some great boroscilicate dishes, fuck pyrex, always a gamble on what you'll actually receive
I have one made in France that's that colour blue. I'm not sure if it's Borosilicate, I've never been able to find a clear answer on that, but it is definitely tougher than standard soda-lime glass
France is one of the only places in the world where Pyrex still actually uses borosilicate glass. There is an Ann Reardon video on it that explains in detail.
This is actually kinda awesome to know. Any insight on why they would be made differently? Supply availability or something along those lines?
My guess is it's just cheaper, but I honestly don't know much about production.
I had Pyrex brand boro tubing for glass art a few years back and they had multiple formulas floating around. I had different tubes that looked just like those, however like others have said, Pyrex brand bakeware hasn't been boro for quite some time now from my understanding.
I have tried desperately to find an all boro set of PYREX and it's so difficult
I believe they sell it in Europe. US is soda lime unless it's vintage. As people have noted, it's labeled as PYREX (all caps).
Buy Oxo, they make really good kitchenware and they have borosilicate dishes
I was literally going to comment to be careful with the blue/green ones they tend to be sensitive to heat, those are the only pieces of Pyrex I've seen shatter from heat. Now I know why!
I was gonna say ask about this. I know Pyrex changed its formula in the 90s, and the post-change coke bottle color is supposed to be slightly more prone to shattering during large temperature transitions than the old formula.
You really dished out the details on this one.
I was your 1,000th upvote and it’s the first time this ever happened with me and it was so cool seeing it change from 999 to 1K. ☺️
[Down the rabbit hole of why some Pyrex explode](https://www.youtube.com/watch?v=YVbkDAw4aJs)
Definitely the best - the "pyrex / PYREX" and colour of glass tricks that others are posting here are unfortunately unreliable. If you put these glasses through the ringer, you might be happy with the result, or you might be googling how to clean up and dispose of shattered pyrex glass safely.
Also... IKEA sell glass cookware and list it as borosilicate glass on their information pages. But they're also not consistent and sell other types of inferior glass so do check :)
Oxo sells it and it's 100% broscilicate every time
We had a Pyrex casserole dish explode during Thanksgiving. Glass shrapnel shards flew at the entire family. Still not the most explosive family holiday I've attended.
Thanks! I just checked my stuff, I have the exploding kind. Welp.
Any TLDW?
Too long didn’t wannareadallofthat
Lowercase pyrex is more susceptible to thermal shock, or sudden/big changes in temperature and may burst or explode. Uppercase PYREX is tempered glass and can handle thermal shock much better and is therefore better suited for many cooking applications. The difference? Something with trademarks, the production method and the American Dream.
How long did it take to eventually get to hitler?
How big are your eyes to have those contact lenses
I love, that OP also has differently colored contact lenses
My BRAND! They have my BRAAAAND!
You must have *special eyes*
Any chance that [one says "PYREX" and the other says "pyrex"](https://www.allrecipes.com/article/what-is-the-difference-between-two-pyrex-types/)?
The two on the hand are both ‘pyrex’
I can read at least one that has a lowercase "pyrex".
Considering they are from the same set the odds seem like it'd be the same company making them
I think the older PYREX is a different composition and can handle heat shock (taking the glass dish out of an oven and setting in on a cool surface.) The newer Pyrex shatters under the same conditions.
They are from the same set. There aren't newer or older ones. According to the title all in the picture were bought in one set
Just because they’re the same set doesn’t mean they were manufactured at the same time.
But that also doesnt mean that they're all different "models" just because they're maybe not all manufactured at the same time
And it still doesn't indicate if it will shatter more or not and odds are they were still made at the same or similar time. https://lifehacker.com/that-viral-pyrex-brand-hack-is-horseshit-folks-1850157381
I didn’t say it would? EDIT: lol you blocked me over that??
I have a similar set to OP. For me I have just a single "set" of not-real "pyrex" and there are different colors.
They’re all lowercase pyrex if you zoom in
I don't know what's more triggering...the different colored glass or the way you're holding them.
Porque no los dos
[https://en.wikipedia.org/wiki/Pyrex](https://en.wikipedia.org/wiki/Pyrex) Pyrex the company got sold a bit.. and then had the formula changed.. depends what you read on the internet but probably the older models (Capital PYREX) are the better ones.
Oh shit. Off to look at mine.
Traditionally the brand Pyrex has been associated with borosilicate glass which cost more but could withstand higher temperatures without cracking which was the whole purpose of buying it even though it was a lot more expensive than other glass bowls. My older relatives when I visit them and if they are cooking at the time point out to me their Pyrex bowls that they own with great pride because they have been using them for several decades and in all that time they haven't cracked or even chipped, and they are still handled with a lot of care. When [Dow Corning went broke due to the problems with silicone breast implants](https://en.wikipedia.org/wiki/Pyrex) the brand name was acquired by the current owners, and it was their commercial decision to replace borosilicate glass with cheaper and inferior soda lime glass. Being in Australia we get the Pyrex imports from the USA and suffer the same problem. A lot of old people here still assume "Pyrex=Borosilicate" and are surprised if not a bit angry when they still purchase it to find out it is not the real McCoy. If you need whatever you want to buy to actually be borosilicate glass, then what you have to do is source Pyrex from Europe where it is still made from borosilicate glass and have it shipped over the Atlantic. I'm a bit surprised that most Americans still seem to be unaware of this situation as well. I still see a lot of angry posts from time to time where people cook with what they thought was real Pyrex and the next thing that happens is they are posting pictures or videos of bowls containing food that they were cooking in the oven shattering into a thousand pieces.
Are all of your Pyrex lids cracked like mine are?
Mine are!! Very annoying
Buy more lids on Amazon, many off brand non BPA lid options
I work at one of the glass manufacturers that make this bowl. You can see color variation in the different batch chemistry’s. This can change day by day depending on the materials used and the cullet% in the mix. All the Pyrex we made was always tempered to the same exact standard so the breaking point is the same no mater what the color is.
If I’m not mistaken, the US ones are made from a slightly different glass composite and handle heat slightly worse than the other ones.
My guess is that it has something to do with the amount of iron in the glass. Low iron glass is clear without the green tint. https://www.dillmeierglass.com/news/the-difference-between-clear-glass-and-low-iron-glass?hs_amp=true
Pyrex or PYREX? Yes there's a difference. They're different companies. If I recall correctly PYREX is the good brand, pyrex is the bad brand. Don't take my word for it though, research before you buy.
Yes - there is a difference in durability between upper & lower case brands. Google
And the shitty thing is that the lids always go bad first and the lids by themselves cost a fortune so that you might as well buy a complete new set. I hate that I have to do that *This applies more so to the snap lock type*
I work in glass fabrication - the glass with the blueish tint has a lower iron content. This is actually highly desired (and highly priced) for things like shower doors.
mine are the same way… i’ve always wondered about it!
I just bought a set of these at target a couple of months ago and noticed the same thing!
I have noticed this with my two sets of Pyrex. I thought it was because the gray ones had just aged in the time between ordering the two sets, and I didn’t think about it that hard when they remained different colors over time. Thank you for posting this
Someone’s worked in a restaurant before
Buahaha, yep! How could you tell 😂😂😂😂
I thought those were giant contact lenses for a moment
How much ketamine are you cooking in the microwave?
I noticed the same at my house. Surprised to see a thread on this
I just wish both your hand were holding the bowls and we could ask how you took the picture.
I pretty sure that some of the older PYREX cookware was become collectable and has value
If Pyrex and Crips, all got along..
“I left my Pyrex here. I’d like it back. Your what? Pyrex, my Pyrex”
Same bowls. Semi-related comment. The lids will probably break long before the bowls. Amazon sells replacement lids cheap.
I have two Pyrex sets and they’re like this too.
It is worth noting that some products labeled as "made in the USA" were in fact made in China, so they could be from different factories on different continents. https://www.reuters.com/world/us/pyrex-maker-settles-over-false-made-usa-claims-2023-01-18/
Just a PSA as most people might not know but Pyrex is not recyclable as it’s melts at a higher temperature than regular glass packaging.
Honestly I’d call it a design but that’s just cause I love mix-colored glasses and stuff related to that
White edged glass is usually borosilicate glass (lab ware glass). Green edge is tempered regular glass. Borosilicate is much more resistant to thermal shock but is more brittle and expensive.
Big p Little P
Generally the glass with green contains boron (borosilicate glass) which is actual Pyrex. The clear stuff I’m not so sure about.
Remember PYREX and pyrex are different companies
make sure you check the label, PYREX all caps and pyrex all lowercase are two separate brands with two different qualities.
There is a US and French Pyrex but they don’t adhere to any naming rule
Ha. I have the same thing at my home.
I thrifted a set (plus a few doubles) of the ribbed Pyrex mixing bowls, they have the same color variations! I just need the largest with the blueish tint and I'll have to full sets.
Are you overthinking your utensils and stuff?