You need to read those studies VERY carefully.

The first one listed by Troglodyte007 gives a detailed description of the methodology used. The second study is only an abstract, so we don't know what the methodology was. There is a 3rd study out there that some tru to use to prove that chlorine dioxide and MIOX are ineffective, but there is a catch.

In the studies they take a water sample with a relatively high concentration of "bugs", add one dose of MSR MIOX solution, stir, wait 4 hours, and then test for the number of bugs still viable. The problem is, that is NOT the method recommended in the MRS Miox User Manual.

In short, the user manual tells you to use test strips to check the MIOX dosed water for sufficient residual (left-over) chlorine before you let the treated water sit for the prescribed period of time. The idea is to put enough MIOX solution in until at least a little residual chlorine is left over after killing the bugs. The MSR Miox protects users by using those purple test strips to make sure at least 4 PPM of residual chlorine remains.

If you treat water with a high concentration of organics (bugs) with just one dose of MIOX solution, and don't use the test strips, the chlorine gets used up before it kills all the bugs, thus it is not effective. Its not rocket science.

The author of the article adds just one dose into sewer water and that's it. No checking for residual chlorine. Of course it won't work.

By the way, the MSR MIOX instructions say that if you don't want to use the test strips you should add 4 doses of solution to be safe. They also suggest that you can use the test strips just the first time you use water from a particular source, than then you may not need to use them after that. Still, they warn to either use the test strips for each new water source, OR use 4X dosage. Lots of folks who are using "familiar" water sources just add a 2X dosage to be safe.

BTW, I've been told that someone once went all over the country gathering ambient Giardia and/or Crypto conentrations from natural lakes and streams all over the U.S. I'l love to see that. The point is that it takes more than one of these oocysts to cause an issue. If the efficiveness in 10 minutes is, say, only 90%. If you start with a solution with only maybe 20 oocysts, that means, the odds are that teh purification will be completely sufficient. I think Doug mentions that in his discussion of the MIOX at equipped.org.

Ken K.