I saw this product today in an email from the NRA, has anyone used a product like this before?
SteriPEN™ Adventurer Handheld Water Purifier
NRAStore.com - Product Detail
Don’t travel, hike, camp or hunt without the SteriPEN! This is a powerful product in a small simple to use package. SteriPEN™ is the only portable water purifier that uses ultraviolet (UV) light to destroy waterborne microbes. Whether your source is a woodland brook or an overseas hotel tap, SteriPEN purifies clear water by destroying viruses, bacteria and protozoa—including Giardia and Cryptosporidium—in seconds. It’s the fastest route to pure, safe drinking water anywhere. Purify 16 ounces in 48 seconds. Includes 2 batteries, a nylon case and a users guide. Imported.