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  2. Borosilicate glass - Wikipedia

    en.wikipedia.org/wiki/Borosilicate_glass

    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.

  3. Pyrex - Wikipedia

    en.wikipedia.org/wiki/Pyrex

    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.

  4. Laboratory glassware - Wikipedia

    en.wikipedia.org/wiki/Laboratory_glassware

    Brown glass jars with some clear lab glassware in the background Laboratory glassware may be made from several types of glass , each with different capabilities and used for different purposes. Borosilicate glass is a type of transparent glass that is composed of boron oxide and silica, its main feature is a low coefficient of thermal expansion ...

  5. CorningWare - Wikipedia

    en.wikipedia.org/wiki/CorningWare

    The lids of CorningWare are typically made of Pyrex. Though some early lids were made of Pyroceram, most subsequent covers have been made of borosilicate or tempered soda-lime glass. Unlike the cookware, these lids have a lower tolerance for thermal shock and cannot be used under direct heat.

  6. Ground glass joint - Wikipedia

    en.wikipedia.org/wiki/Ground_glass_joint

    Bottles and jars in which chemicals are sold, transported, and stored usually have threaded openings facing the outside and matching non-glass caps or lids. Tapered joints can include an external thread for a plastic nut with an O-ring to seal the joint, Rodaviss joints also include a split ring that allows the nut to be used to separate the joint.

  7. These Are the Easiest Ways to Open a Jar When It's Stuck - AOL

    www.aol.com/easiest-ways-open-jar-stuck...

    Place the jar on the counter and try easing the tip of a butter knife between the jar and the lid. This will create a wedge to help pop the seal. Once it's in there, give the lid a twist to help ...

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