Removes viruses, bacteria, protozoa, and particulates, like dirt and sediment.  Technical Features Effective against bacteria: Yes Effective against chemicals/toxins: No Effective against particulate: Yes Effective against protozoa: Yes Effective against viruses: Yes Filter pore size (microns): 0.02 Flow (L/min): 2.5 liters per min Cartridge life: 10,000 liters Field cleanable: Self-Cleaning Field maintainable: Yes Water Bottle Adapter: Yes Cartridge replacement indicator: Yes Dimensions Length: 14.5 cm (5.75 in) Height: 7 cm (2.75 in) Width: 7 cm (2.75 in) Weight 180 g (6 oz) Materials Hollow fiber