Be Prepared. Versatile UV water purifier offers tapered end to disinfect water in various containers. UV lamp treats up to 3,000 liters and with just one set of AA batteries, you can treat 100 liters of water.

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You can consistently rely on the SteriPEN Emergency water purifier to provide you with access to safe drinking water in a time of crisis.
Affordable and efficient, the SteriPEN Emergency purifies 200 half-liter servings of water on just one set of AA lithium batteries, enough to see your family comfortably through any problem time. The SteriPEN Emergeny UV lamp life is 3,000 treatments.

The SteriPEN Emergency fits perfectly into commercial water bottles, forming a seal that lets you keep the water in the original bottle for purification. Just insert the SteriPEN Emergency securely into the mouth of the bottle, turn it upside down, and you have safe drinking water in less than a minute.

SteriPEN Emergency is powered by 4 AA batteries. (Not included.)

Contents: SteriPEN Emergency and user’s guide. One year limited warrantee.

Additional Information
Weight 5.5 oz
Dimensions 7.6 x 1.5 x 1.5 in
Lamp Life 3,000 treatments
Battery AA Lithium (Not included with purchase)
Battery Life Lithium Disposable: 200 treatments (16oz./0.5L), NiMH: 200 treatments (16oz./0.5L); Alkaline & NiCd not recommended.
Minimium Bottle Diameter 20mm (0.8 inches)
Filter Compatability Tapered End (PreFilter and FitsAll)
User Guide en | fr
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We have cycled thousands of kilometers, from the United States to El Salvador and we have used our SteriPEN Adventurer Opti every day while riding to purify our drinking water.
Nico El Salvador
Andrea Rees
Loving my Freedom @SteriPEN, what a difference and that's just in Paris & Nice so far! Love that I can get clean water anytime, anywhere.
Andrea Rees Paris, France
Lea Conlon
During our 5 week Hugging the Coast Kayak Expedition (research on seaweed) in northern Sulawesi, Indonesia we use used our SteriPENs every day! 
Lea Conlon Indonesia

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FAQs for Emergency

Q: Can I use alkaline batteries with Emergency?
— Asked on January 17, 2014
A: No. We do not recommend using alkaline batteries with any of our products. We at SteriPEN highly recommend Energizer Lithium AA batteries. View our batteries page for details.
Q: Does Emergency work with a solar charger?
— Asked on January 17, 2014
A: Emergency utilizes AA lithium disposable or rechargeable batteries. SteriPEN does not offer a compatible solar charger for AA Lithium rechargeble batteries in our product line. However, there are many vendors that offer solar charging units that recharge AA Lithium rechargeable batteries. One such product we highly recommend is the Goal Zero Guide 10 for rechargeble AA batteries and Goal Zero Nomad 7 Solar panel.

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