Guest guest Posted January 29, 2004 Report Share Posted January 29, 2004 >I remember reading or hearing that pyrex is not regular glass, but >has...maybe aluminum in it, too? Does anyone know about this? > >I use a big pyrex bowl I got from Target for making my kombucha...am I >filling my kombucha with aluminum particles or other undesirables? Pyrex is just about the most non-reactive substance there is ... they use it in chemistry a lot because it doesn't tend to leak anything into the chemical solutions they are testing. Most glass does have other stuff in it, but a lot of why pyrex is strong has to do with tempering (how they heat it) and the LACK of foreign particles, if I recall correctly. Silicone bakeware is like rubber, only it puts up with fairly high heat. It is supposedly rather inert, and I haven't heard anything bad about it, though it LOOKS like plastic and one would tend to distrust it on that count. I do have a silicone baking mat and it works incredibly well, and doesn't impart any taste onto anything. -- Heidi Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 29, 2004 Report Share Posted January 29, 2004 >Maybe I just didn't understand your post. I was thinking that you were >saying that insignificant amounts didn't matter to YOU. ANY amount >matters to me that's why I stopped using the cookware. Do the test and >see for yourself with the glass cookware. Aluminum cookware is a >given. It's all the others that I would like to prove. The test is all >I have. > >Cheers, > >Del It's hard to tell what that test proves. I'll have to try it on our cookware, I guess. Pyrex is rather inert .. I used it a lot in Chemistry class when we were testing for MINUTE amounts of trace elements, and the Pyrex didn't affect the resuts AFAIK. Pyrex is REALLY REALLY not chemically active. Some stainless is also not very active, but some is. Tefon I don't trust for multiple reasons (neither does the EPA, it seems). Titanim is probably very inactive, and a safe bet, if it is pure titanium.; I'm not sure what happens to baking soda when it reacts to various surfaces though. First, it is a base, and most FOOD is acidic. And it does change taste with tiny amounts of impurities. The test reminds me a little of one my Mom told me about. A salesman was trying to sell her a garbage disposal. The previous salesperson has shown how strong HIS was, because it could grind up marbles. The next salesguy said: well, marbles are EASY .. try onionskin! Which of course is much harder to grind. I don't know how baking soda tastes when exposed to different baking pans. But I do know there is a LOT more to it than leaching metals ... -- Heidi Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 29, 2004 Report Share Posted January 29, 2004 >Heidi, > >I think the info that I am seeking is not available. All I have to go >on is the baking soda test. The test tells. Do you think the test is >reliable to prove that undesirable metals are brought out in cooking >with cookware that is porous? If when the test is done with glass >cookware and you get the metallic taste (lead?,what would you think? >Have you done the test or do you have a desire to do the test? > >Del Del: After what you have said, I should try it! But ... Pyrex is, for all I've read and know, VERY inert and very safe. Regardless of what it does to baking soda. Most foods are acidic, not basic, and baking soda basically " disappears " when acid isa round. == Heidi Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 30, 2004 Report Share Posted January 30, 2004 I tried it after seeing your posts. Did it on plain glass, pyrex and corning ware. I didn't get any metallic tastes, just good ole baking soda. I don't use a dishwasher and I have noticed that people who do get a haze on their glassware and a funny taste also. Amy Waters Re: Silicon bakeware? Heidi, I think the info that I am seeking is not available. All I have to go on is the baking soda test. The test tells. Do you think the test is reliable to prove that undesirable metals are brought out in cooking with cookware that is porous? If when the test is done with glass cookware and you get the metallic taste (lead?,what would you think? Have you done the test or do you have a desire to do the test? Del > > >I remember reading or hearing that pyrex is not regular glass, but > >has...maybe aluminum in it, too? Does anyone know about this? > > > >I use a big pyrex bowl I got from Target for making my kombucha...am I > >filling my kombucha with aluminum particles or other undesirables? > > Pyrex is just about the most non-reactive substance there is ... > they use it in chemistry a lot because it doesn't tend to leak > anything into the chemical solutions they are testing. Most > glass does have other stuff in it, but a lot of why pyrex is > strong has to do with tempering (how they heat it) and the LACK > of foreign particles, if I recall correctly. > > Silicone bakeware is like rubber, only it puts up with fairly high heat. > It is supposedly rather inert, and I haven't heard anything bad about > it, though it LOOKS like plastic and one would tend to distrust > it on that count. I do have a silicone baking mat and it works > incredibly well, and doesn't impart any taste onto anything. > > -- Heidi Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 30, 2004 Report Share Posted January 30, 2004 NO! Do not put Pyrex on a burner unless it is made for stovetop cooking. It will break. My hubby found that out the hard way. Judith Alta -----Original Message----- From: Delano Eaton [mailto:mushimushi@...] I am going to do it again with my own baking soda and again with the salesman " baking soda. I only have Pyrex bakeware, not stovetop pots. I wonder if there is a dif in the pyrex pots (that are acturally made for stove top) and the bakeware? Is it safe to put a pyrex bakeware dish on the burner to bring the water to a boil? Is that what you did? He used his stovetop pot as I did not have one. I am curious now about that! So thanks for doing the experiment! Del Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 30, 2004 Report Share Posted January 30, 2004 None of my pyrex is for stove top. So I put it in the oven and brought to a boil as I had a casserole going at the same time. Amy Waters Re: Silicon bakeware? I am going to do it again with my own baking soda and again with the salesman " baking soda. I only have Pyrex bakeware, not stovetop pots. I wonder if there is a dif in the pyrex pots (that are acturally made for stove top) and the bakeware? Is it safe to put a pyrex bakeware dish on the burner to bring the water to a boil? Is that what you did? He used his stovetop pot as I did not have one. I am curious now about that! So thanks for doing the experiment! Del > > > > >I remember reading or hearing that pyrex is not regular glass, but > > >has...maybe aluminum in it, too? Does anyone know about this? > > > > > >I use a big pyrex bowl I got from Target for making my kombucha...am I > > >filling my kombucha with aluminum particles or other undesirables? > > > > Pyrex is just about the most non-reactive substance there is ... > > they use it in chemistry a lot because it doesn't tend to leak > > anything into the chemical solutions they are testing. Most > > glass does have other stuff in it, but a lot of why pyrex is > > strong has to do with tempering (how they heat it) and the LACK > > of foreign particles, if I recall correctly. > > > > Silicone bakeware is like rubber, only it puts up with fairly high heat. > > It is supposedly rather inert, and I haven't heard anything bad about > > it, though it LOOKS like plastic and one would tend to distrust > > it on that count. I do have a silicone baking mat and it works > > incredibly well, and doesn't impart any taste onto anything. > > > > -- Heidi > > > > Quote Link to comment Share on other sites More sharing options...
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