MSR Guardian Purifier

Weight 1 lb 1 oz / 0.49 kg Width 3 in Length 8.25 in Height 4.5 in Effective against bacteria Yes Effective against chemicals/toxins No Effective against particulate Yes Effective against protozoa Yes Effective against viruses Yes Filter media Advanced Hollow Fiber Filter pore size 0.02 microns Flow 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 Material(s) Hollow Fiber Country of Origin Made in the U.S.A. of U.S. and Imported Materials