Latest Reviews


rated 5 of 5 stars Best device for the money. Had it for four years now and it's never failed me. Even when I dropped it and the battery cover cracked, it still worked. Great piece of kit, never go off into unsafe waters without one. I've had the Steripen Classic for four years now and it's never failed me.  Even when I dropped it and the battery cover cracked, it still worked. To boot, when I called SteriPEN for information on how to repair the cracked cover they simply shipped a replacement battery cover to me… Full review

Adventurer Opti

rated 4.5 of 5 stars Have utilized the SteriPEN Aventurer Opti now on several outings this summer instead of my pump water filter systems and found it to be very simple and effective. On previous trips (before the SteriPEN), after a rain, the rivers and streams would be full of silt and dirt. That fine silt clogged my pump filtration systems. I tried different pump systems. I replaced filters. I backwashed the units. I found that back washing the unit once for every liter of water, no matter what pump system I was using,… Full review

Adventurer Opti

rated 4 of 5 stars I have this and love it. I love it; it works well. But like any new gadget it does take a few times to get the hang of it. Granted the cost of the battery is a little pricey, but you should be able to use it a year on a set of batteries. So that's not really a big deal, not like I would ever use 6,000 gallons of water hiking in a year. It's a good packable size. I bought this because most methods of water purification is just awful tasting and the the thought of me drinking bleach water is just… Full review


rated 4.5 of 5 stars I got this three summers ago after going on a backpacking trip with a buddy who had one. I really like the convenience and the quickness on how it works. Here in CO most of the mountain streams we come across run clear so we are not dealing with murky, dirty water. The included filter works well to block the bigger stuff. I've put three years of use on the Classic model and to date, have had zero issues with it. I buy the lithium ion batteries for it and the last set made it through the complete… Full review


rated 3.5 of 5 stars Works well but is better suited for base camp or cabin use rather than backpacking. This is my third Steripen, I also use an Adventurer and a Classic. I originally bought this because it did not require any batteries  which would be one less thing to worry about. As far as basic operation goes they all work the same. I got this Sidewinder about 6 months ago and in that time I have had no issues or problems with it at all. It works just as the manufacturer says and since I have not acquired any… Full review

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SteriPEN Coverage in the Trailspace Blog

SteriPen's Ultra UV Water Purifier is All Smiles
SteriPen has expanded its 2013 lineup with the Ultra, which it calls "the most advanced UV water purifer in the world." Read more
February 6, 2013

SteriPEN Freedom: smaller, lighter, rechargeable UV purifier
SteriPen introduced its smallest, lightest, and first rechargeable water purifier: the Freedom. Read more
August 6, 2011

Outdoor Retailer: Hardgood Gear Highlights
Outdoor Retailer abounds with enough models, styles, and price points of outdoor gear to equip every flavor of outdoors guy or gal. Here are a few more highlights from January's show. Read more
February 3, 2011

Outdoor Retailer: SteriPEN Sidewinder -- hand-crank UV purifier
SteriPEN has introduced the battery-free, hand-crank Sidewinder UV water purifier for fall. The Sidewinder uses an exclusive UV system that destroys waterborne bacteria, viruses, and protozoa, such as giardia and cryptosporidium. Read more
August 6, 2010

Outdoor Retailer: SteriPen Adventurer Opti
Pam Aubuchon-Fields, marketing manager at SteriPen, gave us an explanation and demonstration of a prototype of the SteriPen Adventurer Opti handheld water purifier at Outdoor Retailer. Read more
July 22, 2009

Outdoor Retailer: SteriPen FitsAll Filter
SteriPen, makers of ultraviolet water purifiers, introduced the FitsAll Filter, a 4-micron filter for use before purifying water with a SteriPen. Read more
January 23, 2009


SteriPEN by Hydro-Photon
262 Ellsworth Road
P.O. Box 675
Blue Hill, ME 04614

phone: (888) 826-6234
toll-free: (888) 826-6234