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Reply to "Lots of glass Pyrex storage containers but ... "
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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]Corning switched to soda-lime glass in the 1940s, prior to the spin out to Corelle. History is well researched with clear factual citations at Wikipedia, much beter quality citations than is usual. “https://en.wikipedia.org/wiki/Pyrex”[/quote] Changed to soda lime over a period in the 1980s-2007 for clear glass products, which is what is being discussed here. [/quote] Changed clear glass Pyrex products starting in the 1940s. It is well documented that it happened before the Corelle spin-out. [/quote] From your link. "Beginning in the 1980s, production of clear Pyrex glass products manufactured in the USA by Corning was also shifted to tempered soda–lime glass, like their popular opal bakeware.[25]"[/quote]
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