We, ION Water Machineries, one of the Pioneer in the field of water treatment in West Bengal, Kolkata. since 1967. We are Manufacturer and supplier of various water treatment equipment such as Iron Removing Plant, , Water Softening Plant, R.O. Plant etc. 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. 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 filter 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 continuous rejection of water with concentrated salt content and this will be coming out from the RO catridge This is very important for membrane cleaning and it also prevents membrane from choking due to scaling and Calcium and Magnesium. Hence the water flow is adjusted in such a way that purified and rejected water is maintained at 1:3 ratio.