Guardian Gravity Purifier

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State-of-the-art, high-volume water purifier

Using the revolutionary technologies of the original MSR Guardian, this gravity-powered sibling delivers large volumes of purified water virtually anywhere on Earth. From hostels to basecamps to backcountry zones, its military-grade engineering and fast flow mean adventurers have the viral defense and safe water they need for drinking, cooking and hygiene.

Water bottle sold separately.


• Ultimate Two-Stage Protection: Uses hollow fiber and activated carbon to remove viruses, protozoa, bacteria and microplastics, and reduce chemicals and tastes. Meets the more rigorous NSF protocol P248 military testing standard.
• Easy to Fill: 10 L reservoir fills easily at sinks and wild sources. Universal bottle adapter prevents cross-contamination.
• High-Flow Cartridge: Advanced engineering creates fast virus-removing gravity system (1L in 2 min).
• No Backflushing: Integrated purge valve quickly flushes system to clean it and maintain flow.
• Built for Travel: Rugged, military-grade construction; compact system fits easily in carry-on luggage and smaller packs.
• Cartridge Life: 3000+ Liters

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