展开MSR knows the value of hedging ones bets when it comes to water. Thats why they developed the Guardian Purifier. A product with the ability to turn water across the globe into a potable source using military-grade technology. Viruses, bacteria, protozoa, and particulate alike are stopped short by the hollow fiber cartridge that will last for over 10,000 liters. The Guardian is self-cleaning, can filter two and a half liters per minute while in use, and requires little to no setup. Campers and hikers need only direct the intake hose into their water source and begin pumping. The MSR Guardian is a lynchpin to any travelers toolbox when exploring unfamiliar territory.