www.psychiatry.aero

http://www.lifestraw.com/en/high/flaintro.asp - a very cool device, does not filter Giardia - but perfect in every other way! It is $15 straw like filtering device that filters enough water for a year of personal use. Now widely distributed by aid agencies in Africa. Highly recommend as an emergency water purification devise. Easily would fit into a smallest flight pack.