Capacity 500 -10000 Material Stainless Steel Technology Japanese Brand ORENUS RO Capacity(Litre/Hr) 3000 LPH Usage/Application Water Purification Country of Origin Made in India RO works by reversing the principle of osmosis, the natural tendency of water with dissolved salts to flow through a membrane from lower to higher salt concentration. This process is found throughout nature. Plants use it to absorb water and nutrients from the soil. ... The product of this process is highly purified water.