Reverse Osmosis is when water is filtered through a very fine filter with a lot of pressure, removing all the impurities present resulting in clean drinking water.
The RO Membrane is the heart of an RO system & plays a vital role in the purification process. It removes dissolved impurities such as calcium, magnesium, fluoride, lead, silica, phosphate, etc.
The predominant removal mechanism is from differences in solubility or diffusivity, and the process is dependent on pressure, solute concentration, and other conditions. Reverse osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other effluent materials from the water molecules.
The membrane also removes microorganisms such as bacteria & viruses, so the water coming out of the RO system is free from total dissolved solids, microorganisms & other metal contaminants.