Katadyn makes two excellent water bottles for purifying water on the go. The Katadyn Exstream XR Purifier Water Bottle is a great choice. This bottle has three stages of filters to make sure that the water you drink is safe. The first stage of the Katadyn Extstream XR Water Bottle removes large particles from the water. The second stage of the Katadyn XR reduces cysts, and the third stage of the Extstream XR kills viruses and bacteria. This Katadyn Extream XR Purifier Camping Water Bottle can be found here:
http://www.waterfilters.net/Katadyn-...R_p_0-340.html
One set of all filter stages is included with the purchase of the bottle
There is also a replacement filter kit available for the Katadyn Exstream XR Water Bottle that can be found here:
http://www.waterfilters.net/Katadyn-...t_p_0-341.html
This kit includes replacement filters for all three stages. The replacement water filters are simple and easy for the Katadyn XR Water Bottle. The filters simply twist together and twist onto the water bottle cap. No tools are needed so you can replace these filters whether you are at home or on a camping trip.
Katadyn also makes the Micro Microfilter Ultralight Hikers Water Bottle. The Katadyn Micro Ultralight Water Bottle is also a good choice. The Micro Hikers Water Bottle meets the EPA Standards for Giardia and bacteria removal. This Katadyn Water Bottle also removes particles, cysts and parasites that are 0.3 microns or larger. The Katadyn Micro Microfilter Ultralight Water Bottle can be found here:
http://www.waterfilters.net/Katadyn-...e_p_0-342.html
One filter is included with the purchase of a bottle.
There is also a replacement water filter for the available for the Katadyn Micro Hikers Water Bottle. The replacement filters for the Katadyn Micro Water Bottle can be found here:
http://www.waterfilters.net/Katadyn-...t_p_0-341.html
This replacement filter is simple and easy to change. The water filter simply twists on and off the water bottle cap. No tools are needed so you can replace the filters whether you are at home or on the side of a mountain.