Nano Filtration Membrane (NF Membrane), 100 GPD, TFC, Dry, ISO certified 9001:2015 & BARC licensed product, pore size 0.0002 microns, Flux Rate around 22 ltrs/hr, reduces TDS around 80%, maintains minerals in purified water up to 20% naturally. The membrane is suitable for hard water having TDS between 600 ppm to 1200 ppm. As per WHO, BIS and EPA, the drinking water TDS between 100 ppm to 300 ppm remain in excellent condition. But water taste may vary a little from 100 ppm to 300 ppm. The water taste becomes heavy with more minerals. After using the membrane, no need to use TDS Adjuster/Controller that allows impurities in drinking water and UV too (basically radiation being used to deactivate microbe’s DNA in drinking water). Please note water born microbes and virus size lies between of 0.01 micron to 5 microns but membrane pore size much smaller than microbes/viruses’ sizes that ensures 100% elimination of germs/virus, herbicides, pesticides, toxicity, fluoride, cyanide, arsenic etc from drinking water and flushes those impurities through rejected water. KNL sediment filter (5 microns absolute) is made from sediment cloth and polypropylene combinations in two layers; the two ends of wound string has been sealed properly to ensure the elimination of all micro particles. Activated carbon block filter 1000 IV having very high absorption rate of pesticide, herbicides, chlorine, harmful impurities and other toxic elements and therefore absorbs all the harmful chemical and impurities from drinking water and supply chlorine free water to membrane and therefore TFC membrane life enhances. The Coconut Shell activated post carbon (final stage of purification) made from coconut shell and 4.5 inches UF filter inside in combination, therefore the filter serves dual purpose of post carbon & UF filter too. Coconut granules is antibacterial agent and therefore inhibits the growth of bacteria enhances drinking water taste, remove odour and smell.