An RO or Reverse Osmosis membrane is generally a semipermeable barrier in water purification systems for filtering impurities and contaminants out of the water. Water molecules pass through this kind of membrane, while other bigger particles across the membrane are stopped, usually salts, bacteria, and other dissolved solids. The RO membranes are configured for residential, commercial, and industrial applications to supply drinking water that is both safe and clean by efficiently reducing the levels of such pollutants as chlorine, heavy metals, and pesticides. The efficiency and reliability make them very popular filters for the purposes of water filtration and desalination processes.