Ground Glass Joint

Ground Glass Joint

Ground glass joints are used in laboratories to quickly and easily fit leak-tight apparatus together from commonly available parts. For example, a round bottom flask, Liebig condenser, and oil bubbler with ground glass joints may be rapidly fitted together to reflux a reaction mixture. This is a large improvement compared with older methods of custom-made glassware, which was time-consuming and expensive, or the use of less chemical resistant and heat resistant corks or rubber bungs and glass tubes as joints, which took time to prepare as well.

To connect the hollow inner spaces of the glassware components, ground glass joints are hollow on the inside and open at the ends, except for stoppers.

Read more about Ground Glass Joint:  History, Joint Types, Hermetic Sealing, Frozen Joints

Famous quotes containing the words ground, glass and/or joint:

    “A sign, or representamen, is something which stands to somebody for something in some respect or capacity. It addresses somebody, that is, creates in the mind of that person an equivalent sign, or perhaps a more developed sign. That sign which it creates I call the interpretant of the first sign. The sign stands for something, its object. It stands for that object, not in all respects, but in reference to a sort of idea, which I have sometimes called the ground of the representamen.”
    —Charles Sanders Peirce (1839–1914)

    “I must sojourn once to the ballot-box before I die. I hear the ballot-box is a beautiful glass globe, so you can see all the votes as they go in. Now, the first time I vote I’ll see if the woman’s vote looks any different from the rest—if it makes any stir or commotion. If it don’t inside, it need not outside.”
    —Sojourner Truth (c. 1797–1883)

    “Such joint ownership creates a place where mothers can “father” and fathers can “mother.” It does not encourage mothers and fathers to compete with one another for “first- place parent.” Such competition is not especially good for marriage and furthermore drives kids nuts.”
    —Kyle D. Pruett (20th century)