Cyst Filter replacement cartridge for Exstream Water Purification Bottles - Filters sediment and protozoan organisms such as cryptosporidia and giardia - Package of 2 filters Exstream Water Purification Bottle Maintenance: - Change the ViruStat Cartridge after 200 refills. - Change the Cyst and Pre/Post Filters when water flow becomes constricted.

Manufacturer Website:
www.katadyn.us

Manufacturer Warranty Information:
No warranty.

Katadyn 8011553 Extreme Purifier Bottle Accessory Cyst Filter (2-Pack Kit) / Water Treatment & Transport > Filter & Purifier Accessories / Katadyn 8011553