If you intend to travel where there are unreliable water sources then you need a water filter or purifier. Filters and purifiers protect against lots of parasites and water borne diseases, particularly Gardia. A ceramic filter will remove anything (bugs & dirt) in the water down to 0.2 microns while a purifier kills the bugs in the water but removes nothing. MSR filters screw onto the Nalgene bottle range to make for trouble free filtration.
The most compact and lightweight filter available. 210g.
Lightweight and very packable will adapt to all MSR water carriers, 209g.
Ceramic 0.2 micron filter. Field maintainable.
Rechargeable UV water purification with LED indicator, 140g.
UV light water purifiction for the adventurer, 103g.
Lightweight filter with chemical purifier.
Lightweight filter ideal for trekking and backpacking. 310g.
Lightweight, Compact & Simple filter
Purifying water since 1999 complete with pre filter, 162g.
New core for MSR Mini & Water Works EX filters
Instant personal water purifier, 750ml.
Prevent silt getting into your main filter with this handy add on, 26g.
Field maintenance kit for Water & MiniWorks Filters
Water disinfectant tablets.
Pretreatment filter for use with any Steripen, 65g.
Replacement chlorine solution for Sweetwater Purifier System, 76g.
Water disinfectant for unreliable sources
2nd stage filter for Waterworks EX