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A PYREX measuring cup manufactured c. 1980, featuring graduations in both U.S. and metric units. Pyrex (trademarked as PYREX and pyrex) is a brand introduced by Corning Inc. in 1915, initially for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware. It was later expanded in the 1918 (Source ...
Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass. Such glass is subjected to less thermal ...
Laboratory glassware. Laboratory glassware is a variety of equipment used in scientific work, traditionally made of glass. Glass may be blown, bent, cut, molded, or formed into many sizes and shapes. It is commonly used in chemistry, biology, and analytical laboratories.
How Much Money Is the FTC Sending Out? A total of $88,000 is being sent to consumers from the FTC to refund their purchases. All told, 110,000 Pyrex measuring cup products were sold while falsely ...
Updated October 8, 2024 at 10:10 AM. Online shoppers who bought certain Pyrex measuring cups in recent years may be eligible for a refund. The Federal Trade Commission announced it is issuing a ...
A Pyrex borosilicate glass measuring cup Borosilicate glasses (e.g. Pyrex , Duran ) typically contain 5–13% boron trioxide (B 2 O 3 ). [ 75 ] Borosilicate glasses have fairly low coefficients of thermal expansion (7740 Pyrex CTE is 3.25 × 10 −6 /°C [ 78 ] as compared to about 9 × 10 −6 /°C for a typical soda–lime glass [ 79 ] ).
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