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SteriPEN Classic purifies water using Ultraviolet (UV) light. Whether your source is a clear running brook or a hotel tap, SteriPEN destroys viruses, bacteria and protozoa–including Giardia and Cryptosporidium in seconds. Effective: The SteriPEN has been independently tested at 4 universities to eliminate viruses, bacteria and protozoa.This includes Bird Flu, Giardia and Cryptosporidium - in seconds. Effective against the waterborne microbes that cause giardia, polio, diarrhea, hepatitis, typhoid fever, botulism, dysentery and cholera (just to name a few). Microbiological testing has been conducted at the University of Arizona, the University of Maine, the Oregon Health Sciences University and at Hydro-Photon. To date SteriPEN has been tested against: E. coli, Salmonella Typhimurium, Poliovirus, Rotavirus, Klebsiella terrigena, Streptococcus faecalis, Bacillus subtilis (vegitative and spore), common yeast, Coliphage MS2, Giardia and Cryptosporidum. Testing shows that SteriPEN meets the standard as set forth in the U.S. EPA Guide Standard and Protocol for Testing Microbiological Water Purifiers. SteriPEN has been shown to destroy in excess of 99.9999% of bacteria, 99.99% of viruses and 99.9% protozoa. SteriPEN specifications: Weight: 3.7 oz. without batteries (6.5 - 8 oz. with batteries, depending on type) Dimensions: 7.6" (L) X 1.5" (W) X 1.5" (H) Battery: 4 disposable or externally rechargeable AA batteries

SteriPEN is the only portable water purifier that uses ultraviolet (UV) light to destroy waterborne microbes. Whether your source is a woodland brook or an overseas hotel tap, SteriPEN purifies clear water by destroying viruses, bacteria, and protozoa, including Giardia and Cryptosporidium, in seconds.

Steri-PEN is the only portable water purifier that uses ultraviolet (UV) light to destroy waterborne microbes. Whether your source is a woodland brook or an overseas hotel tap, SteriPEN sterilizes clear water by destroying viruses, bacteria and protozoa—including Giardia and Cryptosporidium—in seconds. Carry a SteriPEN to disinfect water wherever you travel, hike, camp or trek. It’s the fastest route to pure, safe drinking water anywhere.
When SteriPEN is used as directed:
Battery Usage for 16 oz of Water:
The SteriPEN Classic handheld water purifier is one of the best new gadgets to come out, that can literally save your life. In order to get your water safe to drink, you don't have to use bitter tasting iodine tablets, or spend time pumping. Now all you have to do is use this small, compact, handheld purifier as it uses Ultraviolet light to kill over twenty different microorganisms in seconds.
With a blazing speed of 90 seconds, you simply put the lit end into your water, wait for the indicator light to go off and you are ready to drink.
For all you ultralight hikers and backpackers, this thing can reduce your overall water weight by at least a pound.
Utilizing the same technology used to purify water in municipal treatment facilities, hospitals and water-bottling plants, the SteriPEN Classic is the only portable water purifier that destroys viruses, bacteria and cysts, including Giardia and Cryptosporidium, by using high-energy Ultraviolet (UV) light. SteriPEN Classic is easy to operate and purifies water quickly and efficiently without the need for chemicals or pumping.
| Battery: | 4 disposable or externally rechargeable AA batteries |
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| Dimensions: | 7.6" (L) X 1.5" (W) X 1.5" (H) |
| Field Maintainable: | Yes |
| Filter Element Duration: | N/A |
| Filter Element Type: | N/A |
| Filter Material: | Ultraviolet (UV) light |
| Flow Rate: | 32 oz. in 90 seconds |
| Kills Viruses: | Yes |
| Micron Size: | N/A |
| Pump Rate: | N/A |
| Recommended Use: | Camping, Backpacking, Travel or Emergency Use |
| Removes: | Viruses, Bacteria and Cysts, including Giardia and Cryptosporidium |
| Removes Giardia: | Yes |
| Warranty: | Limited Lifetime Warranty |
| Weight: | 3.7 oz. without batteries. (6.5 - 8 oz. with batteries, depending on type) |
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View other products from Steri Pen classified in Hiking & Camping > Water Treatment. View all products from Steri Pen.
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Used in the Annapurna Sanctuary | |
| Rating: | ![]() |
| I took this product to the Annapurna sanctuary in Nepal this August. It is spectacular. I had a limitless supply of incredibly pleasant water to drink, and did not get ANY gastro-intestinal problems. Some tips about using it. #1. You MUST use the pre-filter. It gets rid of particulate matter that would shield bacteria and viruses that were in its UV shadow. When he saw the amount of particulate matter removed by the pre-filter, my guide remarked "Are you telling me that I am putting all of that in my body?"! #2. You need to have a collapsable container that will take a full liter of water. It is ONLY used to gather unprocessed water. That liter is poured through the pre-filter into a solid plastic 1 liter Nalgene bottle. #3. You insert the UV light, activate it and 70 seconds later you have one liter of water that is fit to drink, AND THAT TASTES GREAT. #4. Personally, for convenience I transferred that liter to a back pack that had a two liter bladder. #5, On my return to the USA, preparing for a trip to Ireland, I asked my wife if I should take the water purification system. She thought it completely unnecessary. the first thing our guide in Ireland advised us was not to drink tap water in the hotels!!! #6. Friends, who are much more adventurous than I, want to use this device. They cannot stand the taste of the chemically purified water thay have to drink | |
| Skeptic at Eastern Mountain Sports (EMS) on 11/19/2007 | |
determine your needs and preferences. | |
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| A very good tool for filtering but I shouldn't call the water filtered unless a pre-filter is used. Especially on water from lakes/ponds taken from the shore it can still hold silt and such things. Good for using clear water from streams though. For my use I'd prefer a waterfilter and i'm contemplating returning it. Also with regard to the need of batteries. We had around freezing temps at night and having to put the batteries and spares in my sleeping bag to prevent them all from being drained isn't all to comfy. Also: it fits in a 1L Nalgene bottle you can use to clean the water in. | |
| David van Erk at Eastern Mountain Sports (EMS) on 05/08/2008 | |
It must have worked, i didn't get sick | |
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| Used it for 2 days in backcountry with use in pretty clear water. It has been a week and i haven't gotten sick yet. | |
| Kev the snowboarder from jersey at Eastern Mountain Sports (EMS) on 09/10/2008 | |
safe mountain water | |
| Rating: | ![]() |
| The SteriPen was the easiest water purifier that I have ever used. I would recomend this product to any backpacker. | |
| Hawaii backpacker at Eastern Mountain Sports (EMS) on 11/17/2007 | |