We are water treatment plant manufacturer and supplier. one of the pioneer in the field of water treatment in Kolkata, West Bengal since 1967. Reverse Osmosis is a separation process, in which a solvent, water in this case, is permitted to pass through a semi permeable membrane, leaving behind the dissolved solids called Cations and Anions. Depending on the mobility of these ions, the water portion passes through the membrane and very low amount of salts will pass through the membrane. Thus the filtered water has about 10% TDS. This process will remove Bacteria, Virus, Protozoa and reduce the harmful chemicals namely Fluorides, Nitrates Pesticides. Lead, Mercury, Arsenic etc. During Reverse Osmosis Process, there is a continous rejection of water with concentrated salt content and this will be coming out from the RO cartridge. This is very important for membrane cleaning and it also prevents membrane from choking due to scaling of Calcium and Magnesium. Hence the water flow is adjusted in such a way that purified and rejected water is maintained at 1:3 ratio.