User Review: MSR Miox

Excellent water purifier, small, light, compact, and reliable. It produces chlorine dioxide, the same effective chemical used in Aquamira and Micropur tabs, which means that it will kill crypto, unlike iodine or plain chlorine treatments.

I have found that the Miox Pen produces odorless, clean-tasting water with no chlorine taste, when properly used on backcountry water sources according to directions with proper dosages and wait times. Some people have poured the Miox Pen oxidants into already-chlorinated city water sources and decry the 'swimming pool' taste, not realizing that such a procedure will only intensify the taste of already-present residual chlorine. Read the directions and you should have no problems.