See this thread

http://forums.equipped.org/ubbthreads.php?ubb=showflat&Number=141560#Post141560

I use the Katydyn Combi and a SteriPen.

The Steripen can run off of batteries or 100% off a solar cell in case you have no batteries. It you go back to one of your old threads I tried to explain the reasoning behind this filter and the use of either a steripen or miox in your old thread.

See your old thread

http://forums.equipped.org/ubbthreads.php?ubb=showflat&Main=11466&Number=139102#Post139102