Reflux
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Reflux is a technique involving the condensation of vapors and the return of this condensate to the system from which it originated. It is used in industrial and laboratory distillations. It is also u
Laboratory reflux apparatus.
Toluene is refluxed with sodium-benzophenone desiccant before it is distilled to give pure oxygen- and water-free toluene.
Industrial fractionating columns all of which use reflux