Debra Lynn Dadd

can visions cookware and pyrex shatter while cooking?


Hi, I had been tempted to get some of the clear cookware, but now I've heard some complaints about the "glass" cookware exploding?

And that was the reason why the Visions cookware was originally discontinued?

I also heard that Pyrex bowls were originally made of borosilicate glass, which is very resistant to thermal shock (which is what can cause the glass to shatter), but are currently, made of soda-lime glass, which is not as resistant.

What I don't understand is the inconsistency...Why are some people able to cook with on a stovetop just fine without anything breaking or shattering... while others have it explode? Based off what I read, it seems to be more than just a "thermal shock" issue, but I can't tell.

POSTED BY KAT :: WASHINGTON USA :: 05/15/2007 3:44 PM


I don't know where you got the idea that Pyrex or Visions can shatter while cooking. Some websites say "Glass cookware that is allowed to boil dry is likely to shatter" and I had this experience once. When I was a teen, my parents had a Pyrex pot in which my mother boiled water for coffee. One day I put it on and didn't watch it and when it boiled dry, it did shatter. However, this does not occur during normal cooking.

Visions pots are so heavy that I can't imagine that they would shatter under any circumstances.

Regarding the inconsistency, I don't know what references you are looking at, but I would say that if there were problems with shattering, it had to do with the differences in how the pots were used rather than the pots themselves.

Used according to manufacturer's instructions, I don't see any problem with the safety of these pots and they are very nontoxic.

Debra :-)


I have a friend who had a Pyrex baking dish explode when she was using it to bake a batch of brownies. So I think it can happen, though it is quite rare.

COMMENT FROM DEBRA: I think that is extremely unusual.

POSTED BY DIANA :: KANSAS USA :: 05/19/2007 6:44 AM

When I went looking for some visions cookware on Craigslist somebody sent me an email telling me their father had a pot explode on him, and to be careful.. I then went online to google and typed in 'visions cookware', 'explode', 'shatter'. Although from what I read, it does seem like you are right that it IS a rare occurance. But, I am concerned that it seems to happen so unpredictably when it does happen.

As for pryex, this link was enough for me:

I really was disappointed by seeing the possibility of it shattering that way, since the glass cookware seemed so ideal for me. And if I didn't have a little one who liked to cook with me, I might still be willing to take the risk. But since the stories make it out to be so unpredictable, I am too scared to take the chance with my little one.

COMMENT FROM DEBRA: You're right, that link does make one think twice about using Pyrex. I went to the Pyrex website, and they do have a warning at . Perhaps some of these warning will shed some light on why some of these explosions and breakages occurred. There is some degree of risk to almost everything we do. I would venture to say that it is more likely you will get in an auto accident drivng a car than have your Pyrex cookware shatter, yet we all still drive cars.

POSTED BY KAT :: WASHINGTON USA :: 05/21/2007 7:52 AM

Quite a few years ago, I was using a Visions casserole dish to make a small pork roast. I took it out of the oven and had set it on top of the stove (burner was NOT turned on). It was not cooked dry, there was still plenty of liquid in the pan. A minute later, it did explode into tiny shards of glass. It took us many hours to clean the entire kitchen and find all the pieces of glass and liquid that flew everywhere. I was fortunate I didn't get burned as I was standing right next to it. The very next day, we got rid of all my glass cookware.

POSTED BY DAWN :: MINNESOTA USA :: 06/04/2007 3:37 PM

are there any problems with using visions cookware on a smooth top range?

POSTED BY J.S. :: SOUTH CAROLINA USA :: 06/04/2007 3:38 PM

If you have a question as to whether exploding pyrex is an issue, my mother-in-law just had it occur, so I checked online. Below is just one sight where I was shocked at how many times it has occured. Something is definitely wrong!!


Yes, Visionware can shatter!

While making a stirfry, I added a drop of soy sauce into the saucepan where I was cooking vegetables and the whole thing exploded. I'm lucky I didn't lose an eye.

I was finding chunks of glass in my kitchen for weeks. My husband (who was then just my boyfriend) took me and the friends who were expecting to share dinner with us out for pizza.

I got rid of my entire collection the next day. I tried calling the 1-800 number for the company, but continuously got a busy signal and finally gave up, figuring other people were calling in about their exploding cookware. I just chalked it all up to experience and now I cook with stainless steel.

POSTED BY BETH :: OREGON USA :: 06/04/2007 4:27 PM

RE: Pyrex
I have had it explode twice. Both times it was during the winter when the Pyrex was very cold and then put on the heat. I think it was the extremes in temperatures!


For many years I've been cooking with Pyrex bowls and pans, some ovenware and some stovetop. None has exploded. Two things I am wondering about.

First, my Pyrex is old - can't remember how old. Could it be the difference between the older borosilicate glass and the newer soda-lime glass as mentioned by KAT? Does anyone know when the glass "ingredients" changed?

Second, most of the time I cook on gentle heat - 170 degrees in the oven ("slow-cooking") and low heat on the (glass) stovetop. Perhaps higher temperatures are more likely to cause explosions.

I won't be buying any more Pyrex and am certainly concerned. At present that's all I have for myself, being chemically sensitive, and I will need to research alternative, safe cookware noted in Debra's List to buy in the future! Thanks, Debra!

POSTED BY SVE :: WASHINGTON USA :: 06/06/2007 4:11 PM

I just read all of your info on the dangers of Pyrex pots exploding. I am very VERY concerned. I will get rid of my pot that I use to boil water in.

What other kind of pot should I buy? Stainless steel? Can you recommend a specific brand name to buy? Would you email me ASAP with the info? as we need a new pot right away.

Thank you so much!

COMMENT FROM DEBRA: Unfortunately there is no one easy answer to this question. Here is a list of the links to cookware info on my website:


I have had Pyrex for years and never had a problem with anything shattering. There is always a potential for something going wrong with any product you buy but I would think that this sort of thing would occur so infrequently that it isn't worth throwing out your cookware because of it.


Just yesterday I was sauteeing chicken in pyrex and it exploded into pieces all over me and my kitchen. The shock value was great because my mouth almost hit the floor when it happened but it ruined my chicken, not to mention caused me to bleed in several places. I have heard that pyrex explodes when brought from one extreme temp to another. I do know many people who have used it and been totally. In fact, I have used it in the past and been totally fine. However, it only takes one time for pyrex to explode in your face until you decide to never use it again. I will admit that mine definitely exploded when exposed to very high heat. Other times I have sucessfully used pyrex it was not exposed to such high heat.

I am currently in culinary school and use steel pots/pans everyday and they never explode nor are they hard to clean if you simply use a brillo pad. They are versatile and most can be put in the oven, you just always need to grab the handle with a towel or oven mit because they get hot (in or on top of oven). I happen to think they are great pots and pans especially those made by calphalon or all-clad.

If you do decide to stick with Pyrex, I would recommend only cooking with it when using mild temperatures. Do not sautee w/ it or stick it in a 500 degree oven. Boiling water and such should not cause problems, but again....who really knows when so many people have had it explode. I will admit that mine definitely exploded when exposed to very high heat. Other times I have sucessfully used pyrex it was not exposed to such high heat.


My Pyrex shattered while I was cooking with it about 30 minutes ago. It's a miracle no one was critically hurt. Large shards of glass flew 20 feet away and there are scorch marks on my wood floor. It freaked me out so bad that I'm throwing all the Pyrex away.

POSTED BY CW :: CALIFORNIA USA :: 11/20/2007 1:17 PM

I really wish I had known of the Pyrex exploding problem. My 13 year old son pointed out that I shouldn't heat glass in the microwave because it could explode. I told him it's microwave safe, the package said so.... anyway, he's smarter than I am I guess! I just replaced all my plastic prep and storage with pyrex (22 pieces of Pyrex plus lids on many). Now I'm wondering if that was a dumb thing to do?

POSTED BY KRISTEN :: FLORIDA USA :: 11/24/2007 12:02 PM

Dear Dancinchef...Stainless is supposed to be fairly non toxic if you don't use something to clean it with that will scratch it. A brillo pad is iron so maybe the steel would be a bit harder...remember in Science class we learned that something can only be scratched with something of the same hardness or harder.

I don't know if the Brillo pad is pushing your luck but I have found that 1) a plastic brush or scrubber or natural bristle brush will work very well if the pan soaks just a bit and 2) if something is pretty stuck to the bottom, simmering with a little baking soda in the water completely cleans it.

I also wonder if the glass pans explode because they are scratched in cleaning.

POSTED BY JULIE :: INDIANA USA :: 11/24/2007 1:25 PM

Last night my husband made baked pork chops in the oven. He had the Pyrex baking dish on the bottom rack. When the timer went off he removed the dish and set it on top of the stove. My husband turned to the sink to rinse off the meat thermometer and suddenly there was a loud crashing sound. He looked over at the stove and the baking dish had shattered. There was glass everywhere. Thank heavens he had already taken it out of the oven. Most of the glass shot to the floor or stayed on top of the stove. It was a good thing he had turned to the sink or he could have been horribly injured!

We're really happy the only major damage was the ruined pork chops.

POSTED BY LAURIE W. :: KENTUCKY USA :: 11/30/2007 7:45 AM

I bought an Anchor glass casserole that said it could be used for cooking or storage the day before Thanksgiving. My daughter cooked a green bean casserole in it; when it was done, she removed it from the oven and put it on the countertop. Luckily, she moved away from it to hand something to a family member - at that moment, it exploded, shooting thousands of glass shards and hot food all over the kitchen and the turkey which was resting next to it. We were so thankful no one was hurt; however, I worry that someone else won't be so lucky. I informed the store and the manufacturer, but no one seems to be taking any action.

POSTED BY BEBE :: ILLINOIS USA :: 12/11/2007 11:35 AM

I had an almost identical experience a couple months ago. I was baking a chicken in a pyrex dish and removed it from the oven when it was done. Knowing the oven had heated up the top of the stove, I figured it was safe to set it on top of a (relatively) warm burner. It immediately shattered. I was wearing a large oven mitt so the hot glass & liquid landed on the glove. If I had used a pot holder instead, as I sometimes do, my hand and arm would have been burned. Thank God my children or pets weren't nearby. Now when I use glass bakeware, I make sure no one else is around when I put it in or out of the oven. I too am phasing to steel cook/bake ware. To everyone still using glass, please keep the risk in the back of your mind and be careful. I've been using pyrex for decades and never thought it would happen to me but it did.

POSTED BY SHERRI :: ARIZONA USA :: 12/11/2007 2:06 PM

My son is a cook in a hospital kitchen. He put some food in the big oven and walked to the other side of the kitchen. He heard a loud snap and crashing sound. The glass on the oven door had shattered and glass shards flew all over. Fortunately, no one was near the oven when it happened. I guess they don't make glass like they used to.

POSTED BY DONNIE :: MICHIGAN USA :: 12/18/2007 10:37 AM

Just wanted to share something a friend told me recently about Vision ware pots. She puts a piece of wire on the burner under hers, and says it keeps the heat from making the glass brittle. She takes pieces of wire, whatever she has around the house and bends them into clover shapes, big enough to fit on the burner and set the pot on. I hope this helps someone. Thanks for a great blog, everybody! Dorothy in MA

COMMENT FROM DEBRA: When I was a child, my mother used a Pyrex tea kettle to heat water for her coffee. She always used a wire trivet under it as you describe. If you're not handy with making your own, you can buy them. Ask for a "stove ring," "heat diffuser," or "wire trivet." Here's a link to where you can buy one, with a picture so you know what we're talking about:


I have had 2 Visions shatter, one in the dishwasher and another 350 degrees cooking a casserole. TK

POSTED BY TK :: TN USA :: 01/28/2008 8:17 AM

I had a pyrex pan shatter when taken out of the oven last night. It exploded into thousands of dagger shaped pieces of glass with a force so strong it hit the wall ten feet away and burned itself to my linleum floor ruining it with 30 or so quarter sized scorch marks.we had to to pry the glass of my floor and my husband cut himself very badly in the not use this cookware. lots of other people have had similar reactions.

POSTED BY JULIA :: CT USA :: 02/11/2008 3:26 PM

Just a note to let everyone know that vision cookware does explode even without have any scratches or cracks. I was using my vision pot for the first time and was boiling some pasta. I reached up to turn my heat down because it was about to boil over and without warning the pot exploded and all the hot water fell on my foot and now I have a 3rd degree burn on my foot and am laid up for the next 2 weeks. Please take extreme caution if you continue to use vision cookware and keep all children out of kitchen while using it. If my daughter had been in the kitchen with me like she usually is, the water would have landed all over her and her face due to her height.



I just wanted to let you and everyone who reads your website that CBS in Chicago is currently doing a story on glass cookware that is exploding and often causing injury. I was happy to see that story presented, as an anchor-hocking glass casserole had exploded in my house this past Thanksgiving (it's included in the e-mails about the subject on your website). They focused on it for about 10 minutes last night (a long time for the nightly news) and are continuing today. You can also check their website, Pam Zekman, who is an award-winning investigative reporter is handling the story.

POSTED BY BEBE :: ILLINOIS USA :: 02/27/2008 11:40 AM

Hi Debra,

Have you heard of the range top safe Corning Ware made of pyroceram glass? I don't think they are been manufactured any more but I found a lot on eBay and also on where they sell used ones. I am interested in buying one but really not sure what that material is. Do you have any idea? Thank you again for all the wonderful work you have done!

COMMENT FROM DEBRA: Pyroceram is the name of the fire-safe glass used to make the original Pyrex pieces, which was made by Corning.

POSTED BY AM :: CALIFORNIA USA :: 03/07/2008 5:12 PM

After I had such an "accident", with a Vision pot, breaking while I was making a soup, I said no to any glass cookware. What a mess! And my grandson was around when that happened. This can be very dangerous with kids around. I am using now LifeTIme cookware. The best and the safest.

COMMENT FROM DEBRA: This is interesting cookware. You only need to cook on medium or low, so save energy, and also save energy because the special design allows you to stack multiple pots and pans on top of each other to cook at the same time on one burner. However, it is still stainless steel. GM, would you put a magnet on the inside of your cookware and let us know if it sticks or not?


i am alergic to metal and can only cook in glass. I have succeeded in breaking all of mine. Not due to heat. Does anyone know where i can purchase some. Particularly a dutch oven.

POSTED BY SG :: TENNESSEE USA :: 04/07/2008 12:50 PM

I switched to glass two years ago due to heavy metal toxicity warnings which I realize as of now aren't all backed up with long term studies about the effects of heavy metals leaching into our foods from cookware...anyways I haven't broken a piece yet, and not only am I a clutz and have dropped them several times, but I forget things on the stove, so I have burned them dry several times. I must say, though, that one little pot i burnt rice in a year ago seeeeeems to burn more easily now, but it could just be my luck in forgetting I'm cooking everytime i use it.

I find my pieces online on ebay or craigslist.

I'm also going to try to write to pyrex and ask them to bring it back.

good luck


I was reading a few more of the responses here.

I agree that one big difference would be the age. What I use to cook on the stove are pyrex vision pots, it's a really thick dark old glass, which is much different than the thin clear glass that is used today for pans for the oven and an even thinner glass containers (which I also use but in different manners).

I can imagine anything exploding in the microwave because by nature food in the microwave is heated in weird pockets, not uniformly, so I could see one spot getting most of the heat, much more than it was designed to handl. Likewise with using those thin pans on a burner, or even using a pan in the oven in a way that the substance in the pan would cause the heat to be distributed unevenly. I was also always taught that when you are pouring something very hot into a cold glass or china bowl you need to put a metal spoon in first to help transfer the heat (i think) or else the shock will cause it to break. In fact I do a lot of glass cutting with mosaics and one method to cut the glass, after scoring it with either something sharp/knife like, or "dropping it" in which a tiny fracture occurs, but doesn't go through the whole thickness, is to heat it over a candle and then cool it with an ice cube right away and then it breaks completely right along the fractures. As someone else mentioned that could also be what is happening.

Those stories are certainly scary, but probably just flukes.


Wow! I just had THE scariest experience. I am still shaking. I was using a Visions cookware lid on a stainless steel pot and it literally exploded in front of me!!!! I have owned the Visions set for many many years and have no problems. I was using it on the stovetop, which should be problem. I have never used it in the oven or microwave. I don't understand why this happened. The top of the lid just separated from the surrounding ring, and some small pieces are sitting on the stovetop. Fortunately, I was not hit by the pieces. I am furious and will now get rid of the rest of my set. I am saddened to learn this has happened to others and that I was unaware of the problems with Visionware. Let this be a warning to others!! Stop using your old Visions pieces.

POSTED BY JOAN :: WASHINGTON USA :: 04/21/2008 3:55 PM

Just last week I was using an Anchor-Hocking 8oz measuring cup. Room temperature..... I tapped my tablespoon of Mayo into it a couple times and AFTER the table spoon made it back to the jar (1.5-2.0 seconds) the measuring cup EXPLODED all over the kitchen..... The company apologized and is sending a free replacement..... but I'm thinking of stainless measuring cups now.

As far as hot pyrex goes, a friend of mine had a hot 9x13 explode when a single drop of cold water hit it and another dietician said hers just spontaneously broke when she took it out of the oven....
I'm really re-thinking my love affair with glass.... and I just recently replaced all plastic with those Anchor-Hocking containers (I feel the plastic lids are ok as long as the food doesn't touch the lid)

POSTED BY BILL :: INDIANA USA :: 04/21/2008 10:40 PM

I have been using my amber Visions cookware for 15 years now and haven't had any problems. I broke my large pot tonight when I dropped it. I was looking for a replacement and stumbled onto this site. I had no idea that so many people were having problems. My set is really thick glass. I guess they just don't make it the way they used to. Thanks for all of the helpful information.

POSTED BY SW :: TEXAS USA :: 07/08/2008 3:33 PM

I have been using a corning visionware pot for several years without any problems. I am using it on an electric glass top stove. I wonder if that makes a difference. I would like to know what type of stove tops where being used with the people who have had the problems..

POSTED BY J.P. :: FLORIDA USA :: 08/15/2008 4:15 PM

I have been using Visions cookware since I became diagnosed with MCS in 1985 and have had absolutely no trouble with them (and still have all of the original pots and pans, except for one top that I dropped and of course it shatters - I have tile floors). I wouldn't be afraid of them.

COMMENT FROM DEBRA: That's been my experience too. I've been using my Visions cookware for more than 20 years with no problems. Many more people are killed in automobile accidents every year than are injured by Visions cookware. No product or activity is 100% without risk. (My husband hugged me so tight once he had to immediately take me to the chiropractor! But I'm NOT giving up hugging my husband.)

POSTED BY AUDREY :: FLORIDA USA :: 08/26/2008 9:18 AM

Our 9x13 pyrex baking dish exploded this evening, while my wife was tending to the pot roast that was cooking. Yes, it really did explode. And no, she had neither moved it to a cold surface or added anything cold to it.

We both have grown up watching our parents use pyrex dishes for years without incident. Still, it doesn't make me feel any better to discover that in the last 5 years, many others have had similar experiences. For us, the benefits will no longer outweigh the risks.


Hi Deb, this is in ref. to Visions Pots, I agree with you, I have been a user of Corning Ware since 1973 and never had an explosion, and then in 1991 my new mother-in-law presented us with the whole set of Visions Pots and the Roaster, let me tell you I was so happy, and now is 2008 and still no explosion, I hope I am not jinxed, I am really scared now after reading those terrible post, Ciao Happy Cooking Teshie in Dover Delaware


I used to have an entire set of purple Pyrex bakeware. One day, about 10yrs ago, I was cooking chicken with mushroom soup in the 9X13. I put it in the ove, turned it on (I, as usual, forgot to preheat the oven) and went to the living room to talk with my roommate. About 15-20min later we heard this loud boom then crackle noise. I ran into the kitchen and flung open the oven to see glass and mushroom soup exploded all over inside! At first I was just angry b/c it was the last food we had until next paycheck (ahh young and broke!) but then realized how truly dangerous that could've been! I stopped using glass until the last year or so and haven't had any problems but I'm still always very leary everytime I put on in the oven!

POSTED BY HEATHER :: INDIANA USA :: 09/30/2008 10:44 AM

I've been using Visions Cookware for as long as it's been out, and I have never had it shatter or break.

You have to understand that it is glass, and so you cannot put a hot pot under cold water and expect it not to break.

I have used my Visions on Electrical Stoves, and I now have a gas stove. It works well on both types of stoves.

Every type of cookware has it's own positives and negatives. Aluminum Pots leach aluminum, which is thought to be implicated in alzheimers or dementia. Pots coated with teflon are thought to be dangeroua because they lose teflon. Iron pots leech a lot of iron, and are much more difficult to clean. Ceramic pots can be ruined by one incident of dry overheating. All this to say that because your Visions pot may shatter on a very rare occasion, most of those shatter incidents are user caused by misuse.

Oh, and one really great benefit of Visions is that it is the only style of cookware that can safely be used in your microwave. I save a ton of energy and gas by preheating much of my food in a Visions pot in my microwave, and then transfer it to the stove to finish it.


A few years ago I bought 3 clear glass cups by mail from the Vermont Country Store. Not long after I bought them, the first one shattered while sitting on a window ledge near a cold window. I thought it was a fluke, didn't worry about the other two.

Then today, this: one of the remaining cups had been sitting on the kitchen counter overnight. It wasn't very cold, and I had no heating or cooling going in the house. In the morning, I rinsed the cup with cool tap water, filled it with cranberry juice from the refrigerator, drank it, rinsed the cup with cool tap water again and put it in the plastic-covered-wire dish drainer, where it has been dozens of times before, with nothing around it, and went into another room. About 5 minutes later (yes, that long -- I had time to find a book I was reading and read two pages in it), I heard an explosion that made me think the TV, or some other electrical appliance, had shorted out and exploded -- it was that kind of very loud POP.

I went through the house trying to determine where the noise had come from. When I got to the kitchen, I found small, dagger-like glass shards on the floor starting about 6 feet away from the kitchen sink area. At first I thought maybe a light bulb had exploded -- I was totally flummoxed!

Then I saw the shattered cup in the dish drainer in the sink. Nothing electrical was on, nothing could have fallen on it -- I was completely flabbergasted that the only explanation seemed to be that the cup had just exploded, all on its own.

I got the remaining cup out of the cupboard and looked on the bottom and found the raised letters "Bormioli Rocco" and "TEMPERED" and "23". I was looking online for some explanation when I found this site. Searching for "Bormioli Rocco" I found someone who had had a baking dish explode, but so far no other room-temperature cups exploding -- except the two I had -- until the measuring cup mentioned here. What a harrowing experience! I hate to think what might've happened if I'd been near the cups when they exploded.

POSTED BY CATHY H. :: CALIFORNIA USA :: 10/27/2008 4:32 PM

NO ONE should question whether Pyrex can explode without any fault of the user!!!! No one should say it is rare. I am a little upset right now because my daughter just called and said that last night there was an explosion in their oven--the 9x13 Pyrex baking between 350 and 400 degrees exploded. The peices were smitherines, requiring her to take apart her oven and vacuum up peices so small they were like little pieces of glitter. As she said, 30 seconds later, she would have been checking to see if the dish was done--putting her face towards the dish, and with a baby within range of injury. My other daughter has had 3 Pyrex dishes explode. One of mine has, too, although I figured that one was my fault because the hot dish MAY have touched a few drops of water-----however, who knew that would happen? I have 5 or 6 peices of fairly new Pyrex, some not even used and with original packaging still on it. If I had the receipts, I'd take it all back.
No more Pyrex for me.


I bought a 2nd-hand glass pot, and it was very thick. I only used for 4 months; it was my favorite. I bought it for like $7. I went to ebay and thought that the new Corning Vision pots that they are selling look very thin compared to the one I used to have. Maybe this is why the newer Corning Vision cookware shatter more. Are Pyrex and Corning Vision exactly the same thing? I read a forum where people complained after their glass cookware exploded, and I decided never to buy Pyrex cookware and dishes. If Pyrex and Corning Vision are the same, I won't buy Corning Vision, either.

I moved to a co-op, and somebody either stole or misplaced my old glass pot in the basement...

COMMENT FROM DEBRA: Pyrex and Corning Vision are two different things, though they are both heatproof glass.

POSTED BY YH :: MICHIGAN USA :: 12/01/2008 2:19 PM


Return to Q&A Blog

Debra's List ~ 100s of links to 1000s of nontoxic, natural & earthwise products
Debra's Free Newsletters ~ website update, natural sweetener recipes, words of wisdom
Debra's Bookstore ~ recommended reading on health and the environment
MCS Recovery ~ resources for recovery from multiple chemical sensitivities
Sweet Savvy ~ how to choose and use natural sweetners (lots of recipes)
Talk With Debra ~ call for a personal consultation (fee)

Copyright ©2004-2007 Debra Lynn Dadd - all rights reserved.