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MSR AutoFlow Gravity Microfilter

Item # PO307446
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Product Details

A camping water filter has to be easy to use, fast and 100% effective at eliminating pathogens. The MSR AutoFlow Gravity Microfilter excels at all three requirements, making it a great choice for backcountry adventures.


  • Weight: 11.1 oz.
  • Capacity: 4 liters.
  • Additional Features

  • Filters up to 1.75 liters per minute.
  • Maintain flow rates easily in the field by backflushing repeatedly without disassembling.
  • Filter directly into most bottles or reservoirs with included Universal Bottle Adapter.
  • Meets NSF requirements for removal of bacteria and protozoa.
  • Made in USA of imported materials.
  • Why We Love It

    Convenience and ease of use are the hallmarks of this filter. Just fill the bag, hang in a tree and let gravity push the water through the hollow fiber filter at a rate of up to 1.75 liters per minute. 4-liter capacity is ideal for base camp and groups. It also features tool-free cleaning so you can maintain high flow rates in the field.
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