These Katadyn Cyst Filter Replacement Cartridges (8011553) are designed for use with the Katadyn MyBottle water bottle purifier along with the previous model Katadyn Exstream and Katadyn Exstream XR water bottle purifiers. This is a 2 pack of replacement cyst filters. They remove harmful cysts from water such as Giardia and Cryptosporidium.
These advanced Katadyn cyst filter replacement cartridges have a 1 micron rating. Changing the cyst filter regularly will extend the life of your Katadyn MyBottle or Katadyn Exstream water purifer bottles and will ensure optimal performance in cyst and pathogen removal. These cyst filter replacement cartridges should be changed when the water flow through your Katadyn water bottle purifiers becomes constricted.