Tank Water Filters Ultra Pure 5 Stages:With our high quality standards we ensure that our 5-stage ultra pure system is like no otherThe five complete steps and purification cycle ensures pure, reliable and fast water purified from:1-sand2- silt3- rust4- small impurities5- chlorine6- gases7- organic chemicalsCartridges:1-1st stage (pp): the only pp cartridge approved from nsfThe high density cellulose fibers (5) micron cartridge removes rust, slit, impurities, insects, dust and sand2-2nd stage (gac): the highest grades of coconut carbon block which absorb color, odor, chlorine, taste and organic materials3-3rd stage (cto): ensures the optimum water purification from color, odor, chlorine, taste and organic materials.4-4th stage post carbon filter: the highest grades of coconut carbon that enhances taste & odor.5-5th stage calcite: a high quality calcite which acts on minerals ph adjustments.No storage space neededWith tank ultra pure 5 stage purification system, your countertop is freeThe unit is ideal for under the sink installation.Safety first.All plastic food grade and fda approved material makes it safe and easy to clean.The heart of purity - tank cartridgesThe secret of top quality tank filters lie in the high end and top quality tank cartridges that we offer with our filters. Made only out of the purest and highest grade material, which ensure you trusted filtration cycles that you can rely on