MSR Guardian Water Purifier
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MSR Guardian Water Purifier

£299.99 £269.95

Brand MSR


MSR Guardian Water Purifier

The MSR Guardian Water Purifier is the most advanced water filter in the world, designed with the US military to make safe even the most filthiest water, removes not only bacteria but also viruses and all water borne pathogens.

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 back flushing or filter-scrubbing ever required.

Long-Lasting Leading-edge hollow fiber cartridge treats up to 10,000+ litres.

Extremely Durable Engineered to withstand heavy use, freezing, drops, and harsh environments.


  • Effective against protozoa Yes
  • Effective against Bacteria Yes
  • Effective against particulate Yes
  • Effective against chemicals/toxins No
  • Effective against viruses Yes
  • Filter media Advanced Hollow Fiber
  • Filter pore size 0.02
  • Flow (L/min2.5) liters per min
  • Cartridge life10,000+ liters
  • Field cleanable Self-Cleaning
  • Field maintainable Yes
  • Water Bottle Adapter Yes
  • Cartridge replacement indicator

Height 21cm or 8.2".

Weight 490g or 17.3oz.

Diameter (max) 12cm or 4.7".

Brand MSR.



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