Product Description New for 2007! At a mere 4 ounces, the SteriPEN Adventurer water purifier is ideal for backcountry hiking and camping trips. Utilizing the same technology used to purify water in municipal treatment facilities, hospitals and water-bottling plants, the Adventurer destroys viruses, bacteria and cysts, including Giardia and Cryptosporidium, by using high-energy Ultraviolet (UV) […]