Soda-lime glass breaks into jagged shards (left), whereas tempered glass breaks into cube-shaped pieces (right). Photo: Sarah Kobos. The third type of glass is borosilicate, which has at least 5% ...

That doesn’t mean you can’t get borosilicate cookware—it just means you can’t get it with the pyrex brand. As Reddit user Giant_Meteor_2024 points out in a 2018 thread about PYREX branding ...

Pieces made from 1915 to the 1940s reportedly used mainly borosilicate glass. In that case, you could possibly check in a collector guide or browse an old Pyrex catalog to determine the cookware's ...

That makes PYREX cookware safer than pyrex cookware, which runs a higher risk of exploding due to thermal shock—when the glass goes through an extreme temperature change that can cause it to ...

The iconic measuring cup and cookware brand has been around since 1915. ... New York, developed a borosilicate glass that could withstand extreme heat and cold without breaking.

Shattering glass cookware: New paper addresses causes; Margin of safety described as 'borderline' Date: September 12, 2012 Source: The American Ceramic Society ...