[at-l] Chlorine dioxide tablets: Potable Aqua vs Katadyn Micropur

[Carla & Dave Hicks]

Does anyone have a print out of the current product's recommended 
wait/treatment times for chlorine dioxide-- at different temps & water 
conditions.

The one I have (from some time ago) shows:

>>>
15 minutes for viruses and bacteria in 60F and visually clear water
30 minutes for crypto and / or giardia in 60F and visually clear water
4 hours for crypto in 39F and dirty water and acidic (or low pH)
<<<

I think I had one that also showed the wait/treatment time of around 30 (or 
45) minutes for cooler (typical spring water temps).

I know the instructor, in one of the wilderness 1st Aid course I took, 
recommended against chlorine dioxide for winter hiking -- because of the 
extended wait/treatment times in cooler weather and the fact that many hikers 
never read past the "60F and visually clear water" part of the instructions.

So, I'm wondering if the wait/treatment times have been revised.

Chainsaw

----- Original Message ----- 
From: "Mike Cunningham" <hikermiker at yahoo.com>
To: <at-l at backcountry.net>; "Linda Patton" <lpatton at fsu.edu>
Sent: Wednesday, July 21, 2010 10:27 AM
Subject: Re: [at-l] Chlorine dioxide tablets: Potable Aqua vs Katadyn Micropur


...
However waiting the 5 or so minutes after mixing
....
Just fill up the bottle & drop in a tablet & keep on hiking.