SteriPEN is a travel size water purifier. It's basically a UV ray flashlight you submerge into your glass. The water stays cool and it doesn't change the water, except to kill all the living things in it, viruses included. It is expensive, but seems to pay for itself quickly, as you don't have to buy bottled water.
SteriPEN Adventurer handheld water purifier
(via cooltools)
You may wish to read this first http://en.wikipedia.org/wiki/Ultraviolet_light#Disinfecting_drinking_water
I wouldn't trust this device at all, unless you want to wait a long time.
Posted by: rlmerrick | September 05, 2007 at 11:08 PM