MSR Guardian (Worlds Most Advanced Water Purifying System) Backcountry Water sources
- 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.
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.