Cyst Filter replacement cartridge for Exstream Water Purification Bottles, and MyBottle Purifiers(not microfilters)
- Filters sediment and protozoan organisms such as cryptosporidia and giardia - Package of 2 filters - Change the ViruStat Cartridge after 200 refills. - Change the Cyst and Pre/Post Filters when water flow becomes constricted.
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*The image and details above are a representation only, production variances may exist. For details please contact us or the manufacturer prior to ordering.