MSR Guardian Gravity Purifier

Designed to deliver purified water anywhere on earth and with super easy no-pump efficiency, the MSR Guardian Gravity Purifier is a fast, high-volume system that is ideal for backpacking trips, stays at the campground, or for emergency preparedness. It meets the rigorous NSF Protocol P231 standards for water treatment.

This pumpless system purifies water at an impressive rate of nearly half a liter per minute. The two-stage hollow fiber and activated carbon filter neutralizes and remove viruses, bacteria, protozoa, and microplastics. It also reduces chemicals and unwanted taste. The cartridge has a life expectancy of up to 3000 liters and the Guardian Gravity Purifier Replacement Filter cartridge (sold separately) can restore the purifier's effectiveness.

The gravity-based arrangement means that it works to deliver clean water while you pitch camp, cook dinner, or chat. Like most gravity systems, the large 10-liter bag can be hung from a limb with an included strap. Unlike other systems, though, this super rugged military-grade 10 liter bag can stand on its own and holds up to endless use . Set the bag on any elevated surface and let gravity do all the work.

The system includes a quick disconnect hose, a Universal Bottle Adapter with a built-in shutoff clamp to avoid cross-contamination and make it easy to fill smaller receptacles, and a zippered carry case.