Water Treatment

MSR Guardian Gravity Purifier

$307.99 CAD $409.95 CAD

Using the advanced technologies of MSR's original Guardian purifier, this gravity-powered sibling has you covered with safe water around the world—from your local backcountry to remote villages. Hang it while you go about your tasks at the hostel, basecamp or campsite. Its 10 L reservoir supports the daily water needs of multiple people. Originally designed to protect service members in the field, this rugged purifier handles the abuse of travel and meets the NSF P248 military testing standard.

Ships to Canada Only
- Ultimate Viral Protection: Meets NSF protocol P248 military testing standard for removing viruses (99.99%), bacteria (99.9999%), protozoa (99.9%), sediment and microplastics from “worst-case” water conditions.
- Better-Tasting Water: Two-stage purifier includes activated carbon to reduce chemicals and unpleasant tastes and odors.
- Easy to Fill: 10 liter reservoir is easy to fill at sinks and streams alike; covers daily water needs for drinking, cooking and hygiene.
- Simple Cleaning: No backflushing required—simply opening the purge hose flushes the system to clean it and maintain flow.
- High-Flow: Leading-edge cartridge creates a fast virus-stopping gravity system—up to 1 liter in 2 minutes.
- Engineered for Travel: Rugged, military-grade construction. Compact system fits easily in carry-on luggage and smaller packs.
- *Meets U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers

Weight	1 lbs 3 oz / 0.53 kg
Width	4 in / 10 cm
Length	12 in / 30 cm
Height	4 in / 10 cm
Volume	10L
Effective against bacteria	Yes
Effective against particulate	Yes
Effective against protozoa	Yes
Effective against viruses	Yes
Effective against chemicals/toxins	No
Filter Media	Advanced Hollow Fiber
Filter pore size (microns)	0.02
Flow (L/min)	0.5 liters per min
Cartridge life	3000+ liters
Field cleanable	Yes
Field maintainable	Yes
Cartridge replacement indicator	yes