Reverse osmosis (RO) is a filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective," this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as the solvent) to pass freely.

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How does reverse osmosis work?

To understand "reverse osmosis," it might be better to start with normal osmosis. According to Merriam-Webster's Collegiate Dictionary, osmosis is the "movement of a solvent through a semipermeable membrane (as of a living cell) into asolution of higher solutes concentration That tends to equalize the concentrations of solutes on the two sides of the membrane." According to the Merriam-Webster's Collegiate Dictionary, osmosis is the "movement of solvent through a semipermeable membrane (as from the living cell) into asolution higher solute concentration...

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Ultra RO® Systems

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