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Read more The post 10 Vintage Pyrex Bowls Worth Serious Cas Featuring quirky and vibrant patterns, vintage Pyrex is experiencing a resurgence in popularity, especially among collectors who cherish ...
Older clear-glass Pyrex manufactured by Corning, Arc International's Pyrex products, and Pyrex laboratory glassware are made of borosilicate glass. According to the National Institute of Standards and Technology , borosilicate Pyrex is composed of (as percentage of weight): 4.0% boron , 54.0% oxygen , 2.8% sodium , 1.1% aluminum , 37.7% silicon ...
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 ] ).
The softening point (temperature at which viscosity is approximately 10 7.6 poise) of type 7740 Pyrex is 820 °C (1,510 °F). [8] Borosilicate glass is less dense (about 2.23 g/cm 3) than typical soda–lime glass due to the low atomic mass of boron. Its mean specific heat capacity at constant pressure (20–100 °C) is 0.83 J/(g⋅K), roughly ...
Conical (or sleevers) glasses are shaped, as the name suggests, as an inverted truncated cone around 6 inches (15 cm) tall and tapering by about 1 inch (25 mm) in diameter over its height. Also called a "shaker pint" in the United States, as the glass can be used as one half of a Boston shaker. The most common size found in the US holds 16 US ...
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