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Decanting a liquid from a solid. Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension. [1] The layer closer to the top of the container—the less dense of the two liquids, or the liquid from which the precipitate or sediment has settled out—is poured off, leaving denser liquid or the solid behind.
For example, two liquids which cannot be mixed because of different densities (e.g. oil and water) are separated from a solids phase. The heavy liquid (water) collects in the middle between the oil and the solids layer. Thus the two liquids separated from each other can be drawn off from the decanter.
Liquid from another vessel is poured into the decanter in order to separate a small volume of liquid, containing the sediment, from a larger volume of "clear" liquid, which is free of such. In the process, the sediment is left in the original vessel, and the clear liquid is transferred to the decanter.
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Demister (vapor), removes liquid droplets from gas streams; Distillation, used for mixtures of liquids with different boiling points; Drying, removes liquid from a solid by vaporization or evaporation; Electrophoresis, separates organic molecules based on their different interaction with a gel under an electric potential (i.e., different travel)
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These are used to decant two immiscible fluids. It can be graduated, though this is not very common. Hirsch funnels are shaped much like normal funnels, but contain holes or sintered glass at the base for quick filtrations. Dropping funnels are a cylindrical, regularly graduated funnel with standard taper ground glass joints. These are often ...
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