MSR Guardian (Worlds Most Advanced Water Purifying System)

$339.12

Nothing is safer or easier to use for purifying the most demanding backcountry water sources than the Guardian purifier. Originally designed for military squads, it brings this highly advanced technology to global travelers, backcountry users, and those stocking emergency kits. Fast and easy to use, this pump purifier offers the added viral protection you need when traveling in developing nations and popular wilderness areas. Its advanced hollow fiber filter offers the most reliable way to purify even filthy water conditions. Add its long-lasting performance and revolutionary self-cleaning ease, and this may be the only treatment device you’ll ever need.

  • Ultimate Protection: Meets NSF protocol P248, testing standard used by U.S. military, for removal of viruses, bacteria, protozoa, and sediment from “worst-case” water conditions.
  • Fast & Easy: Pumps a rapid 2.5 liters per minute, offering added viral protection without the need for chemicals, bulbs, batteries, or waiting.
  • Self-Cleaning: Pump self-cleans on every stroke, providing consistently fast flow rates with zero hassle—no backflushing or filter-scrubbing ever required.
  • Long-Lasting: Leading-edge hollow fiber cartridge treats up to 10,000+ liters.
  • Extremely Durable: Engineered to withstand heavy use, freezing, drops*, and harsh environments.

    *Withstands MSR water lab drop testing: 6 ft. to concrete.
Color Smoke Weight (Standard) 1 lbs 1 oz
Weight (Metric) 0.49 kg Width (Standard) 3 in
Length (Standard) 8.25 in Height (Standard) 4.5 in
Effective against bacteria Yes Effective against particulate Yes
Effective against protozoa Yes Effective against viruses Yes
Filter media Advanced Hollow Fiber Filter pore size (microns) 0.02
Flow (L/min) 2.5 liters per min Cartridge life 10,000+ liters
Field cleanable Self-Cleaning Field maintainable Yes
Water Bottle Adapter Yes Cartridge replacement indicator Yes
Material(s) Hollow Fiber Country of Origin Made in the U.S.A. of U.S. and Imported Materials

We Believe in What We Build

We know that in the backcountry, reliable gear is critical. That’s why MSR gear has always been engineered to the highest quality standards and rigorously tested before it reaches you.

Seattle Repair Shop

If your MSR gear is in need of repair, please contact our Seattle Repair Shop at 1-800-245-2992 and our technicians will work to find you a solution as quickly as possible. A majority of the time, MSR products can be repaired.

Warranty

If you are experiencing an issue that you feel falls under the MSR Limited Warranty, we’re here to help with that too. Please contact our team to get started.

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