Countercurrent Solvent Extraction
Countercurrent may refer to: *Countercurrent pool *Countercurrent exchange *Countercurrent chromatography *Equatorial Counter Current *''Counter-Currents'', an alt-right online publication *''Countercurrents.org'', an Indian news website *two political party factions in Italy: **Countercurrent (PRC faction, Italy), a faction of the Communist Refoundation Party **Countercurrent (PdL faction, Italy), a faction of The People of Freedom See also

*Counter currency, an element of a currency pair in foreign exchange *Against the Current (other) {{disambig ...
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Countercurrent Pool
A swimming machine, or resistance swimming apparatus ,is a self-contained, pump-driven machine, that enables an athlete or recreational user to swim in place. A swimming machine is possible by accelerating the water past the swimmer or by supporting the swimmer, either in water or on dry land. One type of swimming machine, known as a ''countercurrent swimming machine,'' consists of a water tank at least twice as long and about one and a half times as wide as an average person with the limbs extended. The swimmer swims unrestrained against an adjustable stream of water using jets, propellers, or paddle wheels. Counter current swimming machines made their appearance in the 1970s, initially in the form of pump-driven jetted streams, but received criticism since they created turbulence and an unnatural swimming environment. They were followed up in the 1980s by a propeller- and paddle-wheel-driven machines. These provided a smoother stream of water, thus a more natural swimming exper ...
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