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The Cyst Filter attaches to the middle of your Exstream ViruStat microbial water purification cartridge and can be replaced repeatedly throughout the life of the ViruStat microbial water purification cartridge. It removes pathogens such as protozoan cysts (Giardia and Cryptosporidium) and particulates larger than 1 micron. A must for extended travel in regions with questionable water quality.
Features of the Katadyn MyBottle Cyst Water Filter Kit 2 Pack Prevents clogging of cartridge Can be used to replace a clogged filter
Katadyn Exstream/MyBottle Cyst Filter Replacement Pack (2 pcs.)
Be prepared for a clogged filter in your three-part Personal Exstream Water Purification Systems with two extra Katadyn Exstream Cyst Filters. As the cyst filter is the only part that can clog and tends to do so quickly when you frequently filter dirty water, Katadyn offers you two replacements for your Exstream bottle.
Katadyn Exstream/MyBottle Virustat Kit
$35 - $39
Katadyn Ceradyn Filter Element
Katadyn Gravidyn Filter Element
Katadyn Vario Filter Replacement Carbon
Sawyer Water Filter Squeeze Pouch
$7 - $9
Katadyn Hiker/Hiker PRO/Base Camp Replacement Element
$40 - $49
Katadyn Drip TRK Filter Small Parts Kit
Katadyn Guide Pro Replacement Cartridge
$45 - $49