Breath new life into your RapidPure water purifier with a replacement filter cartridge. Easy to swap over and keeps your trusty purifier going for another 340L. Features Virus protection: treats water for viruses, bacteria, parasites and more with UltraCeram® technology. Faster flow rates: OpenPore Technology uses adsorption (natural magnetic attraction) combined with larger pore sizes for easy drinking . Specifications Filter UltraCeram Cartridge Life Span 340L Effective Against Bacteria, viruses, protozoa, heavy metals, chemicals, sediment Output 1.2L per minute Certification Third party (BCS Laboratories) certified to exceed US EPA water purification standards Freeze Resistance Third party certified as water purifier after initial freeze/thaw cycle and as water filter after multiple freeze/thaw cycles