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SteriPen Water Purifiers
SteriPEN Adventure Opti UV Water Purifier
SteriPEN Adventure Opti UV Water PurifierSteriPEN Adventure Opti UV Water PurifierSteriPEN Adventure Opti UV Water PurifierSteriPEN Adventure Opti UV Water Purifier

SteriPEN Adventure Opti UV Water Purifier

Item #:

Product Description
How it Works

Lightweight water treatment for peak performance in the outdoors!

Adventurer Opti was built for the toughest mountains and rivers in the world.  Backpacker Magazine gave it their Editor’s Choice Award in 2011 for changing the face of portable water treatment.  When camping, backpacking and hiking, if you won’t have access to the power grid for several days a time, Adventurer Opti is the product for you.

The Adventurer Opti is essential gear for thousands of adventurers!  Adventurer Opti features an optical eye which senses water to ensures safe use and effective treatments.  The revolutionary optical sensor doubles as an integrated LED flashlight for added convenience on the trail or around the campsite: hold down the activation button for three seconds to illuminate the darkness.

Rugged design and construction trusted by thousands of endurance athletes.  Adventurer Opti is powered by two CR123 batteries making it lightweight and keeping it operating effectively in even the coldest environments.

The long-lasting UV lamp provides 8,000 water treatments! This Adventurer Opti works in containers with a minimum 1.75 inch diameter opening. (Like Nalgene wide-mouth bottles one liter bottles.)

Contents: SteriPEN Adventurer Opti, two disposable (non-rechargeable) CR123 batteries, neoprene case with belt loop and user’s guide.

This product is covered by a 3 year limited manufacturer’s warranty.

Product Specs


3.8 oz


6.1 x 1.5 x 1 in

Lamp Life

8,000 treatments


CR123 (included with purchase) or RCR123

Battery Life

Disposable — 100, 0.5 liter treatments
Rechargeable — 80, 0.5 liter treatments

Minimum Bottle Diameter

35mm (1.4 inches)

Filter Compatibility


How do SteriPENs work?

All SteriPens use ultraviolet (UV) light to kill various bacteria, viruses and protozoan that live in water to purify it and make it suitable for drinking.

Extensive microbiological and structural testing by independent laboratories across the U.S. and Canada has proven SteriPEN to be safe and effective, confirming the fact that SteriPEN’s UV light technology eliminates over 99.9% of bacteria, viruses and protozoa that cause water-borne illness.

As a result, SteriPEN has earned the Water Quality Association’s Gold Seal, certifying that SteriPEN purifies water safely and effectively. SteriPEN purifies 16oz. (0.5L) in just 48 seconds; 32oz. (1.0L) in just 90 seconds. All without any pumping, timekeeping, or any added aftertaste or chemical odor.

SteriPen works faster than traditional water filters and unlike chemical treatments there is no unpleasant taste or smell in the water.

What does the UV light in SteriPen Kill?

Bacteria - Bacteria are microscopic living organisms, usually one-celled, that can be found everywhere.

Campylobacter - A bacterium that causes intestinal infections. It is the leading cause of bacterial diarrhea.

Cholera - An acute intestinal infection caused by ingestion of food or water contaminated with the bacterium Vibrio cholerae.

Cryptosporidium - One of the most widespread intestinal parasites and a common cause of severe diarrhea. Often found in surface and groundwater sources susceptible to flooding or faecal contamination.

Escherichia coli - Also known as E. coli. It is transmitted to humans primarily through consumption of contaminated foods, such as raw or undercooked ground meat products and raw milk. Sometimes present in water contaminated by fecal matter.

Giardia – Has an outer shell allowing it to survive outside the body for long periods of time and making it tolerant to chlorine disinfection. The parasite is most commonly transmitted by water. It is the most common cause of non-bacterial diarrhea in North America.

Hepatitis – This virus can live in water and causes the medical conditions Hepatits A, B, C, and D.

Legionella – The disease-causing bacterium, Legionella pneumophila, is a waterborne pathogen found in natural and man-made water systems. Water supplies harbor Legionella pneumophila, and have been linked to outbreaks of both hospital- and community-acquired Legionnaires’ disease.

Protozoan parasite – Protozoan parasites live in the cells and tissues of other living creatures. Protozoans can cause problems, from targeting the central nervous system to diarrhea.

Salmonella – Salmonella bacterium can live in water for several months. Most persons infected with Salmonella develop diarrhea, fever, and abdominal cramps.  

Shigella – Shigella is one of the leading bacterial causes of diarrhea worldwide. Estimates suggest that Shigella causes approximately 90 million cases of severe dysentery with at least 100,000 of these resulting in death each year.

Viruses – A virus is a small infectious agent that replicates only inside the living cells of other organisms.

Your SteriPEN Classic, Adventurer, Adventurer Opti, Freedom or Journey is warranted to conform to its published specifications and be free from defective materials or workmanship for three (3) years from date of purchase. In the case of the lamp, during its recommended lifetime of 8000 treatments, subject to the terms and conditions in this section.

Your SteriPEN Traveler, Traveler mini or Emergency is warranted to conform to its published specifications and be free from defective materials or workmanship for one (1) year from date of purchase, also subject to the terms and conditions in this section.

Hydro-Photon will either repair or replace (at its sole option) free of charge, any parts necessary to correct defects in materials or workmanship.

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