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MSR HyperFlow Microfilter

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Product description

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.

  • Testing: Meets NSF protocol P231 for removal of bacteria (99.9999%) and protozoa (99.9%) from beginning to end of filter life in “worst-case” water.
  • 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

Made in the U.S.A. of U.S. and Imported Materials

Effective against protozoa


Effective against bacteria


Effective against viruses


Effective against particulate


Effective against chemicals/toxins



7.8 oz / 221 g


3.5 in / 8.3 cm


7 in / 17.8 cm

Filter media

Hollow Fiber

Filter pore size (microns)


Flow (L/min)

3 liters per min

Flow (strokes per liter)


Cartridge life

~1000 liters

Field cleanable


Field maintainable


Country of Origin

Made in the U.S.A. of U.S. and Imported Materials

Mechanical advantage


Water Bottle Adapter


Cartridge replacement indicator


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