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:
“And out of the ground made the Lord God to grow every tree that is pleasant to the sight, and good for food: the tree of life also in the midst of the garden, and the tree of knowledge of good and evil. And a river went out of Eden to water the garden.”
—Bible: Hebrew Genesis 2:9-10.
“A sudden violent jolt of it has been known to stop the victim’s watch, snap his suspenders and crack his glass eye right across.”
—Irvin S. Cobb (1876–1944)
“I conjure thee, and all the oaths which I
And thou have sworn to seal joint constancy,
Here I unswear, and overswear them thus,
Thou shalt not love by ways so dangerous.
Temper, O fair Love, love’s impetuous rage,
Be my true Mistress still, not my feign’d Page;
I’ll go, and, by thy kind leave, leave behind
Thee, only worthy to nurse in my mind
Thirst to come back;”
—John Donne (1572–1631)