I've had a spare filter for quite some time but have been delaying replacing my old Katadyn/Pur Hiker filter cartridge because it hasn't become hard to pump. Well, after 2 years of use I decided tonight it was time to change it for sanitary reasons. Glad I did.
The filter itself was brown, so its seen some use. The intake nozzle had some sediment buildup. Inside the actual pump, all around the inside was a layer of dark gree/brown film and it stank. It smelled like my filtered water had been tasting for about a year. So I cleaned the inside, rinsed and replaced with the new filter cartridge. Pumped a liter through the new cartridge. 749 more to go!
The filter itself was brown, so its seen some use. The intake nozzle had some sediment buildup. Inside the actual pump, all around the inside was a layer of dark gree/brown film and it stank. It smelled like my filtered water had been tasting for about a year. So I cleaned the inside, rinsed and replaced with the new filter cartridge. Pumped a liter through the new cartridge. 749 more to go!

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