This large diameter cartridge, high capacity, hollow-fibre membrane cartrideg packs in a tremendous surface area in this inline POU filter. The small footprint of the twist-Lock hollow fibre means installation in even the smallest space while still being able to produce large volumes of ultra pure water filtering bacteria, cysts and even viruses.Average rejection rates:99.9999% - bacteria99.99% - cysts99% - virusesCapacity: 9,500 litres @ 3.8 lpm