Alexapure GO Replacement Filter Easy To Install Replacement Filter For The Alexapure Go Water Bottle Each Go Replacement Filter Has A Capacity Of Up To 300 Gallons Of Water Individually Packaged And Easy To Stow With Your Survival Or Camping Gear Removes Up To 99.9999 Percent Of Contaminants, Including Bacteria And Viruses, From Any Fresh Water Source Lab And Field Tested To Ensure Clean, Pure Water