HyperFlow Microfilter

It will change the way you travel in the backcountry.

The HyperFlow microfilter utilizes the latest Hollow Fiber Technology and our most advanced engineering to make water treatment so small and so easy to use, it will change the way you travel in the backcountry. Its ergonomic design, diminutive size and tool-free maintainability make it just as appropriate on day trips as it is on multi-day excursions. Add a filtration rate of 3-liters per minute and you’ve got the most efficient microfilter ever created. Also included is a Quick Connect bottle adaptor—allowing direct connection to all MSR® hydration products and a variety of other "wide mouth" containers—and an advanced prefilter to prolong the life of your filter.

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HyperFlow Microfilter - $99.95 (USD)
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Available for U.S. addresses only.

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  • High Flow Rate: Pumps more than 3 liters per minute or one liter every 20 strokes.
  • Ultralight: Just 7.4 oz. (209 g).
  • Ultra-small: Just 7x3.5 in. ( 17.8 x 8.3 cm) makes it easy to take along even when space is at a premium.
  • Field-Maintainable: Can be cleaned repeatedly for flow recovery without tools.
  • Super Convenient: Quick Connect bottle adapter lets you filter water directly into a variety of containers, including all MSR hydration products and other wide-mouth containers
View specs in printer-friendly format
Effective against protozoaYes
Effective against bacteriaYes
Effective against virusesNo
Effective against particulateYes
Effective against chemicals/toxinsNo
Weight7.8 oz / 221 g
Width3.5 in / 8.3 cm
Length7 in / 17.8 cm
Filter mediaHollow Fiber
Filter pore size0.2 microns
Flow (L/min)3 liters per min
Flow (strokes per liter)20
Cartridge life~1000 liters
Field cleanableYes
Field maintainableYes
Country of OriginMade in Seattle, USA
Mechanical advantageNo
Water Bottle AdapterYes
Cartridge replacement indicatorNo
  • Bronze OutDoor INDUSTRY AWARD 2008 from the OutDoor European Trade Fair to recognize its high performance in the outdoors and the innovative design choice of hollow fiber material for the filtration media. The MSR HyperFlow microfilter is one of only 27 award winners from a pool of 280 product submissions.

  • The HyperFlow microfilter is one of only 17 products awarded in 2008 with the prestigious Backpacker Magazine Editors’ Choice Award for outstanding innovation in design, materials and performance.

Made in USA

HyperFlow Microfilter Instructions

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