MSR Trail Base Water Filter Kit
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