MSR Guardian Gravity Purifier 21MSRUMSRGRDNGRVTCAC

SPECS Length: 7.5 in./ 19 cm. Width: 12 in./ 30 cm. Height: 4 in./ 10cm. Weight: 1 lb. 3 oz./ .53 kg. Filter Flow (L/min): 0.5 liter per minute Filter Pore Size: 0.02 microns Filter Media: Advanced Hollow Fiber Cartrige Life: 3000+ liters DESIGN & DETAILS MSR Guardian Gravity Purifier boasts a two-stage purification which includes activated carbon to reduce chemicals, unpleasant tastes, and odors Meets NSF protocol P248 military testing for removing viruses(99.99%), bacteria (99.9999%), protozoa (99.9%), sediment and microplastics from worst-case water conditions Fast-flow rate up to 1 liter in 2 minutes with reservoir hang height of 6 feet, 2.5x faster than the next leading gravity purifier 10-liter reservoir is easy to fill while also covering daily water needs for drinking, cooking and hygiene Simple cleaning by opening the purge hose to flush the system Engineered with rugged, military-grade construction with a compact fit ideal for carry-on luggage and smaller packs NSF P248 testing standard - A rigorous scientific certification that proves device safely removes claimed contaminants from challenging wilderness water sources Meets U.S. EPA drinking water standards (U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers)