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MSR Trail Base Water Filter Kit

  • Sale
  • $139.95
  • Regular price $139.95
  • Will ship in 3 - 13 days. In Stock


To meet the needs of multi-activity backcountry adventurers, we set out to engineer the most versatile water filter ever. The Trail Base microfilter kit features modular components that allow it to be used as a gravity system at camp, a pocket-sized filter on the trail, or a fast-and-light reservoir when you need to carry clean water with you. Whether you’re hiking, biking or basecamping, the Trail Base water filter kit offers incredible flexibility and options, making it the one filter that truly adapts to your adventure and the filtration task at hand.

Effective Against: Bacteria (99.9999%), protozoa (99.9%) and particulate. Hollow fiber filter meets U.S. EPA drinking water standards* and NSF protocol P231 testing standard.

Versatile: Modular components allow system to quickly and easily transform from a 2 or 4 L gravity system into a small trail filter and back.

Simple Transitions: Trail filter simply quick-connects into gravity system to create the complete gravity-fed filter system.

Complete Kit: Includes ultralight, durable clean water reservoir, which features our 3-in-1 cap for easy filling, drinking and pouring.

*U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers

  2 LTR 4 LTR
SKU 10372 10943
Color None None
Weight (Standard) 1 lb 1 lbs 2 oz
Weight (Metric) 0.46 kg 0.52 kg
Width (Standard) 5 in 5 in
Width (Metric) 12.7 cm 12.7 cm
Length (Standard) 12 in 12 in
Length (Metric) 30.5 cm 30.5 cm
Height (Standard) 3 in 2.5 in
Effective against bacteria Yes Yes
Effective against chemicals/toxins No No
Effective against particulate Yes Yes
Effective against protozoa Yes Yes
Effective against viruses No No
Filter media Hollow Fiber Hollow Fiber
Filter pore size (microns) 0.2 0.2
Flow (L/min) 1 liters per min 1 liters per min
Flow (strokes per liter) 60 60
Cartridge life 1500 liters 1500 liters
Field cleanable Yes Yes
Field maintainable Yes Yes
Water Bottle Adapter no no
Cartridge replacement indicator yes Yes
Material(s) Hollow Fiber Hollow Fiber
Country of Origin Made in the USA of US and Imported Materials Made in the USA of US and Imported Materials
Black Friday, Cyber Saturday and Small Business Saturday dealers are now available on all MSR products including the MSR Trail Base Water Filter Kit. The MSR Trail Base Water Filter Kit is just one of many MSR items we offer on sale. Check out this link for Black Friday deals.

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