Büchner flask
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A Büchner flask, also known as a vacuum flask, filter flask, suction flask, side-arm flask, or Bunsen flask, is a thick-walled Erlenmeyer flask with a short glass tube and hose barb protruding about 1
Büchner flask
A Büchner funnel is attached to the flask via a black elastomer adapter. The hose barb is connected via vacuum hose to a vacuum source such as an aspirator. The flask should be clamped before use or the hose will likely cause it to tip.
Schlenk line
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The Schlenk line is a commonly used chemistry apparatus developed by Wilhelm Schlenk. It consists of a dual manifold with several ports. One manifold is connected to a source of purified inert gas, wh
Büchner flask
…enters and is held by the flask while the residue remains on the filter paper in the funnel. The Büchner flask can also be used as a vacuum trap in a vacuum line to ensure that no fluids are carried over from the aspirator or vacuum pump (or other vacuum source) to the evacuated apparatus or vice versa. Although…
A Schlenk line with four ports. The cold trap is on the right.
Close-up view, showing the double-oblique stopcock, which allows vacuum (rear line) or inert gas (front line) to be selected
The two reactants for an aldol reaction are prepared in adjacent flasks, ready for one to be transferred to the other while maintaining air-free conditions
A yellow suspension is filtered through a sintered-glass funnel into another Schlenk flask under air-free conditions