Had this gadget been a little less expensive, it could gain more impact in the third world countries where the main cause of deaths is contaminated water. For those who can afford, SteriPEN is a UV water purifier which purifies water with the help of Ultraviolet light. Just stir it in a glass of water for less than one minute and it effectively kills germs, bacteria and protozoa. It works on 4 AA batteries and weighs 227 grams.
It is available here for £149.00 (US$279). Another alternative here.
[Via Gizmologia]
Steripen is very necessary when travelling in India. I found a company that deals in these gadgets. they have a website called northstonehealthcare.com. Thought I would share it with anyone whos looking for that here in India