MSR - Autoflow Gravity Filter
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: Lets gravity do the work so you don't have to.
Fast: Filters more than 1.75 liters per minute.
Lightweight: Weighs only 10.5 oz. (299 g).
Field-Maintainable: Can be cleaned repeatedly without disassembly for flow recovery.
Adaptable: Filter directly into most any bottle or reservoir with included Universal Bottle Adapter.
Effective against protozoa Yes
Effective against bacteria Yes
Effective against viruses No
Effective against particulate Yes
Effective against chemicals/toxins No
Weight 13.8 oz / 392 g
Width 4 in / 10 cm
Length 6 in / 15 cm
Filter media Hollow Fiber
Filter pore size 0.2 microns
Flow (L/min) 1.75 liters per min
Cartridge life ~1500 liters
Field cleanable Yes
Field maintainable Yes
Country of Origin Made in Seattle, USA
Water Bottle Adapter Yes
MSR, for over 40 years, have manufactured high end, cutting edge, innovative products for hiking, trekking, skiing, snowshoeing and expeditions. It was established by Larry Penberthy, an engineer and climber, in the late 1960's. He was keen to investigate why climbing gear failed and began testing equipment. From the results of these tests he found he was able to design products that were stronger and functioned better than what had come before. Today MSR, now owned by Cascade Designs, still sets the standard for high performance equipment for the outdoor industry, including tents, stoves, snowshoes, cookware, water treatment, trekking poles and snow tools.
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