Guardian Purifier

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Advanced Portable Purifier; treats viruses, bacteria, and protozoa

With military-grade engineering and game-changing technology, the MSR Guardian Purifier is simply the safest, easiest way to purify water virtually anywhere on earth. The Guardian purifies 2.5 liters per minute, treats up to 10,000 L in a filter's lifespan, and is built with self-cleaning performance. Originally designed for military squads, the Guardian is one of the only filters on the market that treats viruses, making it perfect for international travel and disaster preparedness.

International Restrictions Apply

California WARNING: Can expose you to styrene, which is known to the State of California to cause cancer.


Brand Name:
490 g (17.3 oz)
8.2 in H
Mfg Sku/Part Number:
Other Features:
Protects Against:
• Viruses: Norovirus / Norwalk, Rotavirus, Hepatitis A virus
• Bacteria: E. coli, Shigella, Salmonella, Cholera
• Protozoa: Giardia, Cryptosporidium, Amoebae
• Particulate: Sediment, Silt, Dirt

Ultimate Protection: Advanced hollow-fiber cartridge metes testing standards used by U.S. military for removing viruses, protozoa, bacteria, and sediment from event the filthiest water.
Self-Cleaning: Patent-pending system self-cleans with each stroke, eliminating the need to ever backflush or filter-scrub to maintain flow.
Fast, Easy & Long-Lasting: Purifies 2.5 liters per minute from nearly any source without chemicals, bulbs or batteries, and treats up to 10,000+ liters.
Rugged Construction: Withstands heavy use, freezing and extreme environments, and is impact-resistant.
Fits 63mm Bottle Openings: Screws on to wide-mouth bottles and reservoirs such as Nalgene, Klean Kanteen and MSRFilter Pore Size: 0.02 microns

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