Trusted on mountains and trails for over 15 years, SteriPEN® Classic is the best-selling portable UV purifier of all time. Since 1999, hundreds of thousands of people have ensured their drinking water is safe and avoided ruined adventures with SteriPEN® Classic.
The next generation of Classic operates on four AA batteries batteries. With one set of alkaline batteries, Classic 3 purifies up to 50 liters or supercharge your Classic 3 with lithium batteries and treat up to 150 liters. With a lamp life of up to 8,000 liters, you’ll be drinking safe water for over 7 years!
The 40×40 micron screen Pre-Filter fits perfectly on wide-mouth one liter water bottles and removes particulates that can get in the way of UV light in water. The Pre-Filter is designed to be stored directly on a wide mouth bottle and the SteriPEN Classic 3 fits perfectly in the filter. Just insert Classic 3 in the filter opening, turn the bottle upside down, and gently rock to circulate light throughout bottle. The tapered end also fits snugly in plastic water bottles. Just insert the lamp into the water bottle, turn it upside down and gently rock the bottle.