This simple SteriPEN guide explains how SteriPEN products disinfect water and how to operate this handheld UV purifier so you can drink clean water on your outdoor excursions. If your SteriPEN isn’t working, this manual equips you with the knowledge needed to clean or repair it. You can also learn how weather conditions and murky water may affect the SteriPEN’s operation. The diagram of parts and safety features for the UV purifier helps you visualize the instructions given. \nView the PDF by SteriPEN here.