Also, it is cheaper to produce and more environmentally friendly.
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However, its thermal shock resistance is lower than borosilicate's, leading to potential breakage from heat stress if used contrary to recommendations. European Pyrex is still made from borosilicate. The differences between Pyrex-branded glass products has also led to urban legends and the concern of safety issues—in , the Consumer Product Safety Commission reported it had received 66 complaints by users reporting that their Pyrex glassware had shattered over the prior ten years yet concluded that Pyrex glass bakeware does not present a safety concern.
The consumer affairs magazine Consumer Reports investigated the issue and released test results, in January , confirming that borosilicate glass bakeware was less susceptible to thermal shock breakage than tempered soda lime bakeware. However, they admitted their testing conditions were "contrary to instructions" provided by the manufacturer. Because of its low expansion characteristics, Pyrex borosilicate glass is often the material of choice for reflective optics in astronomy applications. In , George Ellery Hale approached Corning with the challenge of fabricating the inch 5.
The mirror was cast by Corning during — out of borosilicate glass. The first blank now resides in the Corning Museum of Glass. From Wikipedia, the free encyclopedia. For the programming language, see Pyrex programming language.
Archived from the original on January 4, Retrieved 5 June Archived from the original on 2 October Archived from the original on 29 September Archived from the original on National Institute of Standards and Technology. Retrieved September 8, Archived from the original on 15 March If the unknown pattern is conclusively identified, it will be renamed to the proper official name.
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Pyrex identification is often an inexact science, to say the least. We would rather have fun with it, than spend hours trying to figure out the exact name of every single item ever made.
Pyrex Passion by Michael D. Barber A comprehensive guide to decorated vintage Pyrex - featuring photos and info from many in the Pyrex Love community! Mauzy This is an essential Pyrex book for collectors featuring over beautiful color photographs of our favorite glassware!
Note, that the price guide supplement is not included with the book. Includes detailed pictures, production dates, rarity and current value. This is a conundrum for several patterns that actually span this year; like Abundance and English Breakfast.
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Both of these patterns were sold with Fireside lids until the end of and clear lids starting in On the brighter side, it also helps to narrow down the dates of questioned patterns such as "Duck" I placed a couple of the more obscure patterns at the end of the list, since I have never been able to find any information on them. April Designer Casserole.
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Country Festival not Friendship, that is Pyrex. Delicious French White only. English Meadow - 1st Edition Square. English Meadow - 2nd Edition Square. English Meadow - 2nd Edition French White.
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