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:
“Keep out of Chancery.... It’s being ground to bits in a slow mill; it’s being roasted at a slow fire; it’s being stung to death by single bees; it’s being drowned by drops; it’s going mad by grains.”
—Charles Dickens (1812–1870)
“More Safe, and much more modest ‘tis, to say
God wou’d not leave Mankind without a way:
And that the Scriptures, though not every where
Free from Corruption, or intire, or clear,
Are uncorrupt, sufficient, clear, intire,
In all things which our needfull Faith require.
If others in the same Glass better see
‘Tis for Themselves they look, but not for me:
For MY Salvation must its Doom receive
Not from what OTHERS, but what I believe.”
—John Dryden (1631–1700)
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—Kyle D. Pruett (20th century)