Has anyone used a steripen uvc water purifier while on tour. was the battery life acceptable? we are doing the himalayas from next month, and am wondering if i have to carry loads of batteries to make this reliable over an extended period of time.
A good filter, like the MSR Miniworks, physically filters out bacteria and chemically binds organic chemical pollutants. The Steripen, like iodine tabs, just kills bacteria and does nothing to remove mud, debris, or chemicals. When you start thinking about drinking out of a roadside ditch, you'll wish you had a filter.
Bruce Gordon Ti Rock N Road , Fat Chance Mountain Tandem 
When I wrote the above post I used a word that begins with ret- and ends in -ard to indicate that effectiveness was reduced or limited. There is apparently a word police system operating on the forum that I did know about. The R word was replaced by ******* completely disrupting the flow of information unless I changed the word to one less offensive??? Is there a list of prohibited words that we all should know about?
Well, this forum is privately owned, so the First Amendment doesn't apply. But rather than political correctness, I think the censor should be limited to words that ONLY can be used as racist or sexist perjoratives. Otherwise, we have this sort of situation: