Reverse Osmosis Process (RO) is a modern day advancement in water purification. The core of the process is a reverse osmosis membrane with tiny pores. When water gets pressured through it, membrane produces two outputs: clean water that’s pure enough to have very few contaminants left, and a “dirty” output that in drinking water applications is typically discarded down the drain. Since pressure was used , and membrane pores are tiny to let only very small size molecules (like H2O) through, any impurities that are larger molecules will be rejected by it.Fits many standard RO systems