Mountain Safety Research’s Guardian Water Purifier was designed to prevent illness from unsanitary water. This portable water purifier is features military-grade engineering and works with a filter rather than chemicals.

MSR Guardian Water Purifier
This portable water purifier makes travel easy and worry-free! Photo by Mountain Safety Research

The MSR Guardian Purifier’s long filter life makes this water purifier ideal for long-term trips. With a 10-year lifespan, it can purify more than 10,000 liters of water. In just one minute, the MSR Guardian Purifier can remove viruses, bacteria and more, from 2.5 liters of water. And its self-cleaning feature means you never have to scrub a filter.

No matter where your adventure takes you — whether it be a frigid or rocky environment — the MSR Guardian is designed to withstand freezing temps and it passed a six-foot fall lab test on concrete.

The MSR Guardian Purifier cleans water without using chemicals. Its website reads:

Unlike conventional hollow fiber technology, these advanced medical-grade fibers block viruses, the tiniest waterborne microbiological threats.

In just one step, the filter removes:

  • Viruses like:
    • Norovirus / Norwalk
    • Rotavirus
    • Hepatitis A virus
  • Bacteria like:
    • E. coli
    • Shigella
    • Salmonella
    • Cholera
  • Protozoa like:
    • Giardia
    • Cryptosporidium
    • Amoebae
  • Particulate like:
    • Sediment
    • Silt
    • Dirt

The MSR Guardian Purifier will be available for purchase in January 2016. For more information, visit

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