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Slip this Micro Replacement Cartridge in your Kayadyn Micro Water Bottle to keep your water tasting fresh.

Replace the carbon cartridge in your Katadyn Micro Water Bottle with the Katadyn Micro Replacement Cartridge to keep water tasting fresh and to keep bacteria at bay. Each cartridge can handle 26 gallons (100L) of water, so if you've had your old cartridge for a while, it may be time to replace the cartridge. *Water bottle not included.

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Here's what others have to say...


It's a replacement filter...

  • Familiarity:I've put it through the wringer

What else is there to say other than it works with the Katadyn Mybottle and as good as the filter that came with my bottle.

I just received this new cartridge and it...

I just received this new cartridge and it has two pieces while the original from MyBottle has three (see photo). There are no instructions; I am uncertain as to whether to use just these new (2) pieces or whether they combine with one of the parts I already have (the two pieces from replacement and three pieces from are are not identical). Perhaps the two new pieces fit to the original bottom piece I have? (This bottom piece is the carbon prefilter according to my original manual. The clear part in middle is the cyst filter and the top piece is ViruStat.) I have called Katadyn (left message) and also sent question online on their site (no replies). I also assume (if this is the correct cartridge) that I should condition the same way as when it was new and after storage? Thank you for any insight.

I just received this new cartridge and it...
Unanswered Question

I cannot get moisture out of my cartridge;...

I cannot get moisture out of my cartridge; I have tried everything (so it seems).
I have tried gravity, solar, air pressure, time (and combinations and other methods), but there is still considerable condensation on the plastic tube around the filter, and if I give it a good flick of the wrist, water beads come out. Thankfully no mold has grown that I am aware of or can taste, but moisture 2 months after my last use is getting ridiculous.
Any recommendations?


Where to order gear online.

    Shopping for my nephew's first water filter online for Christmas. Found the Katadyn which looked like the right one at another famous backcountry gear behemoth that everybody is a member of. Then, found water filter AND replacement cartridge at for the same price behemoth had for just the filter.

    How often should the carteridge be changed...

    How often should the carteridge be changed in the bottle.

    Best Answer

    Katadyn recommends cartridge replacement after every 100 liters but of course this all depends on the water quality.

    FYI, the best use for this micro filter is on the trail & as an emergency back-up.

    I have used the Kayadyn cartridge for 1...

    I have used the Kayadyn cartridge for 1 week out of the U.S. and the bottle has been sitting for a year (I cleaned...can't remember how)...Should I buy another filter or is the orig. filter still ok to use. My concern is for the critters that have been hanging out in the filter for a year.

    Best Answer

    You should be just fine by pumping a liter or two of clean water through the idle cartridge. If you still have concerns, pump a 32 to 1, water to bleach, solution through it. Lastly follow this up by pumping/rinsing a liter or two of clean water through the rejuvenated cartridge. This will eliminate any need to purchase a new one.