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Just like a battery, filters need to be replaced.
Katadyn Microfilter Replacement Cartridge
MSR Ceramic Filter Cartridge Replacement
MSR HyperFlow Filer Replacement Cartridge
It's as simple as "Fill it. Hang it. Forget about it."
MSR HyperFlow Microfilter Water Purifier
Compact, easy-to-maintain filter. Great for everything from day hikes to extended trips.
The Vario combines individual efficiency with the simplest possible handling. The technology it uses consists of three filter levels.
Hiker PRO by Katadyn
You look parched, here ... try a Base Camp filter.
The convenient and effective microfilter. Fast and easy to use pumping mechanism.
Katadyn Hiker Pro, Hiker, and Basecamp Replacement Cartridge filter.