Used in laboratories to easily assemble apparatus from parts
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A ST45/50 ground glass inner (male) joint held above an outer (female) joint
The same joint, closed
Ground glass joints are used in laboratories to quickly and easily fit leak-tight apparatus together from interchangeable 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.
One of the glassware items to be joined would have an inner (or male) joint with the ground glass surface facing outward and the other would have an outer (or female) joint of a correspondingly fitting taper with the ground glass surface facing inward. 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.
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Groundglassjoints are used in laboratories to quickly and easily fit leak-tight apparatus together from interchangeable commonly available parts. For...
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glass surfaces to be connected, and the inner joint is inserted into the outer joint such that the groundglass surfaces of each are next to each other to...
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the ubiquity of interchangeable groundglassjoints. Today, commercially available parts connected by groundglassjoints are preferred; where specialized...
dropping funnels have an additional narrow-bore glass tube from the bulb of the funnel, to the groundglassjoint around the stem. These replace the liquid...
chemical resistance. Traditional Florence flasks typically do not have a groundglassjoint on their rather longer necks, but typically have a slight lip or flange...
into a corresponding groundglass female joint. The stationary female joint is designed such that it joins two or more pieces of glass tubing. The stopcock...
North America. A large percentage of the glassware makes use of groundglassjoints. The Quickfit brand is blown in Stone, Staffordshire, in the United...
illuminating prism, the bottom surface of which is ground (i.e., roughened like a ground-glassjoint), so each point on this surface can be thought of...
glass bulb filled with a small amount of fluid—usually mineral or silicone oil, less commonly mercury. The inlet to the bulb is connected to a ground...
desiccant, wherein at one end the tube-like structure terminates in a groundglassjoint for use in connecting the drying tube to a reaction vessel, for the...
the gauge more compact. The connection is usually made either by a groundglassjoint or a flanged metal connector, sealed with an o-ring. The sensor wire...
connected by tightly fitting and greased groundglassjoints. Round bends of glass tubing with groundglassjoints may be used to adjust the orientation...
for fixing male and female parts of groundglassjoints, (1984). Handled clamp for groundglass ball and socket joints or the like, (1988). Sella, Andrea...
liquid. An additional version is wide and low. Mixing cylinders have groundglassjoints instead of a spout, so they can be closed with a stopper or connected...
hold the joint together. The use of springs is of particular benefit when dealing with positive pressures, as they apply enough force for the glass to operate...
vapor and condensed liquid, are open; they are often fitted with groundglassjoints for secure and airtight connection to other equipment. Compared to...
sintered glass at the base for quick filtrations. Dropping funnels are a cylindrical, regularly graduated funnel with standard taper groundglassjoints. These...
reaction groundglassjoint An apparatus designed to quickly and easily fit two pieces of leak-tight glassware together, featuring groundglass surfaces...
thick round tube with ground-glassjoints (B in the figure), and the second is a cap (A in the figure), also with ground-glass connections. The length...
the funnel. On top of the funnel there is a standard taper joint which fits with a groundglass or Teflon stopper. To use a separating funnel, the two phases...
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