Just got this from Katadyn's web site:
...
EPA Water #1(clear, 20° C) EPA Water #2(dirty, 4° C)
Bacteria 15 minutes 15 minutes
Virus 15 minutes 15 minutes
Cysts 30 minutes 4 hours
...
Looks like I may retire the iodine for good!
They tasted like crap anyway.
Flip
Cool - I was going to post the URL to that, so glad you tracked it down.
I've been using them for a year now and really like them.