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:
“The poet is like the prince of the clouds
Who haunts the tempest and laughs at the archer;
Exiled on the ground in the midst of jeers,
His giant’s wings prevent him from walking.”
—Charles Baudelaire (1821–1867)
“We are little airy creatures,
All of different voice and features:
One of us in glass is set,
One of us you’ll find in jet,
T’other you may see in tin,
And the fourth a box within;
If the fifth you should pursue,
It can never fly from you.”
—Jonathan Swift (1667–1745)
“There is no such thing as “the Queen’s English.” The property has gone into the hands of a joint stock company and we own the bulk of the shares!”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)