Reverse Osmosis process, commonly known as RO, is also known as hyper-filtration or ultra-filtration. It is the finest filtration method known which allows the removal of particles as small as ions from a solution. Reverse Osmosis was developed in the late 1950's under U.S. Government funding, as a method of desalinating sea water. Today, Reverse Osmosis has earned its name as the most convenient and thorough method for water filtration. Besides removing salt and impurities from water, reverse osmosis can also be used to purify fluids such as ethanol and glycol.

This advanced technology of water purification is now available to homes and offices for drinking water filtration.