MSR Guardian Gravity Purifier Replacement Filter Cartirdge

Replacement purifier cartridge for Guardian Gravity Purifier System. Ultimate Viral Protection: Meets NSF protocol P248 military testing standard for removing viruses (99.99%), bacteria (99.9999%), protozoa (99.9%), sediment and microplastics from “worst-case” water conditions. High-Flow: Groundbreaking hollow fiber technology for fast, anti-virus water purification (up to 1L in 2 minutes.). Better-Tasting Water: Two-stage purifier includes activated carbon to reduce chemicals and unpleasant tastes and odors. *Meets U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers Made in the USA of US and Imported Materials