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MSR

MSR Guardian (Worlds Most Advanced Water Purifying System)

$389.99 USD
Shipping calculated at checkout.

17% Off YOUR ENTIRE ORDER
Discount Automatically applied at checkout - No Code Needed

30-Day Money Back Guarantee
Hassle-free returns on Most Orders

⚠️IMPORTANT⚠️

Canada Post strike in effect - Order now for priority processing with our alternative shipping providers.

Delivery and Shipping

United States: Free standard shipping on orders over $200.
Canada
: Free standard shipping on orders over $100 to BC, AB, SK, MB, and ON

Delivery Times

Canada: 3-7 business days after processing.
United States: 5-10 business days after processing.

For More information, please see our Shipping Policy

Payment & Security

Payment methods

  • American Express
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

*This product can only be shipped within Canada
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.