Includes a 2L Platy Bottle to collect water as a complete system, or create your own, using your own bottle or reservoir * Easy, Pump-free filtering * Fast 1.5-liters per minute * Back flushes in four seconds in any configuration you choose, maintaining optimal performance with no additional parts * Meets all EPA & NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera