The SteriPEN delivers high-tech water sterilization in a package about the size of a fountain pen.
The peace of mind comes from the application of a well-known sterilization technology — the use of ultraviolet light to kill all forms of viral and bacteria contamination in water — in a lightweight, battery-driven package. To use it, you simply stir the SteriPEN in a bottle of water for one to two minutes.
The SteriPEN, which is available online for around $140, runs on four AA batteries and is good for 5,000 uses — roughly 1,000 gallons of water — before the ultraviolet lamp needs to be replaced. A pre-filter is available for pretreating water that isn’t clear. The SteriPEN and pre-filter are designed to fit on a 32-oz. wide-mouth water bottle.