On Aug 18, 2005, at 5:56 PM, Russell McMahon wrote: > apart from small issues such as Giardia Iodine doesn't kill Giardia? Or just not in the timeframe allowed by this particular filter? BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist