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MSR AutoFlow Gravity Microfilter

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MSR AutoFlow Gravity Microfilter

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MSR AutoFlow Gravity Microfilter

The AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight and pump-free system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow microfilter is fast as well—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.



  • No pumping
  • Fast
  • Lightweight
  • Field-maintainable
  • Adaptable



  • Weight: 392 g/13.8 oz
  • Width: 10 cm/4 in
  • Length: 15 cm/6 in
  • Filter media: Hollow Fiber
  • Filter pore size: 0.2 microns
  • Flow (L/min): 1.75 liters per minute
  • Filter life: ~1500 liters

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