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SLop discusses how to use Pyrex glassware safely
On 2011-09-13, J. Clarke > wrote:
> And yet it's made in the same factory using the same process as the > Pyrex cookware that Corning was selling more than half a century ago, so > I guess Corning should have called it "walglass" in 1950 too. > > The Pyrex labware is still borosilicate. http://en.wikipedia.org/wiki/Pyrex |
SLop discusses how to use Pyrex glassware safely
On 2011-09-13, James Silverton > wrote:
> Perhaps, but not if it is glowing red hot like Pyroceram. Do you have a point or are you merely looking to argue? I recommend you redirect to sf. nb |
SLop discusses how to use Pyrex glassware safely
On 9/13/2011 10:11 AM, notbob wrote:
> On 2011-09-13, James > wrote: > >> Perhaps, but not if it is glowing red hot like Pyroceram. > > Do you have a point or are you merely looking to argue? I recommend > you redirect to sf. > > nb Your perverse, pedantic arguments are just about getting to the point of my kill-filing you. I do know the history of Pyroceram and, if I may have have drifted a little from *your* interpretation of the original post, there *never* has been a thread of any length, in any news group, that did not drift. -- James Silverton, Potomac I'm *not* |
SLop discusses how to use Pyrex glassware safely
On 2011-09-13, James Silverton > wrote:
> my kill-filing you. Why wait? Do it now and avoid the holiday rush. ;) nb |
SLop discusses how to use Pyrex glassware safely
On Tue, 13 Sep 2011 00:00:00 -0400, "Ed Pawlowski"
> wrote: > >"sf" > wrote in message .. . >> On Mon, 12 Sep 2011 23:16:39 -0400, "Ed Pawlowski" >> > wrote: >> >>> It has not been for the last 50+ years. Why the fuss now? Must have >>> been a >>> competitor starting a bashing campaign. >> >> It has been mentioned several times here by various well known >> posters. Put me in the "so what else is new" category. Times change, >> products cheapen. >> >> -- >> I love cooking with wine. >> Sometimes I even put it in the food. > >Hmmm, I wonder if it has been cheapened, such as thinner walls. I've not >bought any in many years so I don't have the newer stuff to compare, but >I'll stop and look if I think of it. At holiday time (T-Day/X-Mas) Pyrex cookware goes on sale, I usually look to see if there's something new but it's always the same-old; measuring cups, pie pans, and various casseroles, all items I already have... I've not noticed "thinner" glass, but the prices are a lot thinner then. I have never had a piece explode, break, or chip and most are over 50 years old. I have a few pieces that I bought in the last ten years, I see no difference in thickness. |
SLop discusses how to use Pyrex glassware safely
On Mon, 12 Sep 2011 23:16:39 -0400, "Ed Pawlowski" >
wrote: > >"Ron Capik" > wrote in message m... >> On 9/12/2011 2:53 AM, fratermus wrote: >>> On 09/11/2011 05:45 PM, Ron Capik wrote: >>> >>>> Pyrex™ is not (and never has been) white glass. >>> >>> My understanding is that it's no longer borosilicate. >>> >> Sadly that seems to be true. I did some checking since >> my first post and it seems they have been transitioning >> to tempered soda-lime glass for some time. >> >> Also, on reading up on the catastrophic failures it does >> sound like something has gone wrong in the tempering >> process or some such. >> >> I mostly worked with fused silica [quartz] in my lab >> so I had few worries about thermal stress. :-) >> >> == > >It has not been for the last 50+ years. Why the fuss now? Must have been a >competitor starting a bashing campaign. I'll give you 2:1 on one or more lawsuits. |
SLop discusses how to use Pyrex glassware safely
On Sun, 11 Sep 2011 10:41:18 -0400, Ubiquitous > wrote:
>It appears that World Kitchen (which makes Pyrex™) has hired "Food >Network celebrity" Sandra Lee for a nationwide consumer education >campaign. The campaign aims to teach consumers how to safely use their >products so that the glass will not suddenly explode. > >http://pyrexware.com/index.asp?pageId=32 Pyrex safety was the lead article in this month's Consumer Digest. |
SLop discusses how to use Pyrex glassware safely
On 13 Sep 2011 12:33:20 GMT, notbob > wrote:
>On 2011-09-13, sf > wrote: > >> No idea if it has thinner walls or if that even matters. > >It doesn't. Borosilicate lab glass 1/3rd the thickness of bakeware >can safely go directly from a burner to cold water without breaking. > >nb Thickness does make a difference. Thick glass does not equalize in temperature as quickly as thin glass, so differential contraction of the outer glass vs inner glass induces strain. If the strain is great enough, even borosilicate glass can shatter. Years ago I ground telescope mirrors from Pyrex disks 8" x 1.5" thick. Warming a disk was done by dunking in a bucket of *barely warm* water, then after a few minutes adding warmer water and mixing well. Those disks were so thick that they would have cracked going from room temp to boiling water temp or vice versa. -- Best -- Terry |
SLop discusses how to use Pyrex glassware safely
On Tue, 13 Sep 2011 15:26:52 -0400, Mason Barge >
wrote: >On Sun, 11 Sep 2011 10:41:18 -0400, Ubiquitous > wrote: > >>It appears that World Kitchen (which makes Pyrex™) has hired "Food >>Network celebrity" Sandra Lee for a nationwide consumer education >>campaign. The campaign aims to teach consumers how to safely use their >>products so that the glass will not suddenly explode. >> >>http://pyrexware.com/index.asp?pageId=32 > >Pyrex safety was the lead article in this month's Consumer Digest. And Consumer Reports also had a recent article about explosions from newer pyrex glassware. There is definitely a difference between the old stuff and the new stuff. -- Best -- Terry |
SLop discusses how to use Pyrex glassware safely
On Thu, 15 Sep 2011 12:55:31 -0500, Terry >
wrote: >On Tue, 13 Sep 2011 15:26:52 -0400, Mason Barge > >wrote: > >>On Sun, 11 Sep 2011 10:41:18 -0400, Ubiquitous > wrote: >> >>>It appears that World Kitchen (which makes Pyrex™) has hired "Food >>>Network celebrity" Sandra Lee for a nationwide consumer education >>>campaign. The campaign aims to teach consumers how to safely use their >>>products so that the glass will not suddenly explode. >>> >>>http://pyrexware.com/index.asp?pageId=32 >> >>Pyrex safety was the lead article in this month's Consumer Digest. > >And Consumer Reports also had a recent article about explosions from >newer pyrex glassware. There is definitely a difference between the >old stuff and the new stuff. So Pyrex is now cheap glassware? How the mighty have fallen. I can remember when it was the standard as it stood up to almost any abuse. |
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