MSR Guardian Filtration Replacement Cartridge. The cartridge body is in red and the cap is in black.
MSR Guardian Replacement cartridge
The inside threads of the MSR Guardian replacement Cartridge. The cartridge is a deep red colour on a white background.

MSR Guardian Replacement cartridge

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$176.99

*This product can only be shipped within Canada

Replace the purifier cartridge on your MSR Guardian Filter, or just carry one as a back up.

  • Removes viruses, bacteria, and protozoa.
  • Comes with clean side cover.
  • Hollow fiber filter removing bacteria and protozoa.
  • Note: the quality of water will significantly affect the filter's 10000 liter life.