SteriPEN SteriPEN Adventurer Opti for Sale, Reviews, Deals and Guides

I've used my SteriPEN on trips including all-day climbs (Snakedike on Half Dome), week-long family backpacking trips, and months-long international trips to Micronesia. I haven't gotten sick once, though I have had to resort to boiling water and/or using chemicals (MSR's AquaTabs) when my SteriPEN's batteries wore out prematurely. Used according to the instructions, I have high confidence in the efficacy of the device. It's fast, convenient and light (lighter than anything other than chemical treatments, as far as I've found). The problem is that the batteries are expensive, hard to come by in most small US towns, and completely unavailable in many remote international places. Worse, in my experience, I found the number of treatments for every 2 batteries (the SteriPEN requires 2 cr123, 3.0 volt batteries) to be highly variable and strongly affected by cold temperatures. Note that reduced water clarity will have a substantial effect on treatment efficacy! In a pinch, you can let your water sit over-night to let suspended sediments settle out. It's a pain, but better than getting sick. I still rely on my SteriPEN, but I'm careful to check the condition of the batteries before heading out, and pack extras as well as AquaTabs. One other note: You essentially HAVE to use a wide-mouth 1 liter Nalgene as your water bottle--anything else is impossible to use with the SteriPEN or so difficult as to compromise the water treatment you're getting. I like using a hydration pouch for many outdoor activities, and this imposes an additional hassle, weight and volume.

Small, simple, and handles viruses too! If getting water from springs and mountain streams, this is the device to take. Great option for international and local adventures alike.

I would highly recommend this to anyone who is looking to get a small convenient water treatment device. It is easy to use and works like a charm. I used this for the first time a couple weekends ago down in Escalante and it was perfect for the trip. Let me know if you have any questions on this or any other water treatment devices we carry.

This water treatment device is small and simple to use. I have used it with and without my filter while camping/backpacking and it is the 1st thing I pack when traveling internationally. I have/will gift this many times over. The battery life has varied quite a bit so I suggest buying backup batteries just in case.

A quick and easy way for safe drinking water. Just dip into a naglene bottle, swirl until green light goes off, and its ready. I used it on a Salt Creek in Canyonland NP and I'm didn't get sick. It must be working.

I like this SteriPEN for all of the same reasons as everyone else. Its small, light weight, and is really easy to use. I've used this baby over a handfull of times now and it never fails to impress the group I'm traveling with. On my most recent trip, it was able to suffice the needs of 3 people on a 5 day trip with a single set of batteries.

i have used the steripens in asia for months at a time. this year i am working with disaster relief in nepal. the villages are a mess...as are the water sources. there is more garbage and s-h-i-t around than there ever before and i am eating, sleeping, and drinking water in the thick of it daily. once again...6 weeks in and not a hitch or a hiccup with water issues. i didnt notice the new pen is not a double aa so i didnt bring back up batteries. so, take note of this.

Once you know the specifics of using the Adventurer, it can't get much easier. I've taken it on many trips as a precautionary measure, as well as my main filtering source on backpacking trips. It's never let me down, and I've never gotten sick.

I've had this little guy for about a year now. I had the original model SteriPen that I used for a few years and this one is lighter, sleeker, more rugged feeling, and seems to have better battery life. There are certain times where a filter is still a necessity or just more practical. Murky water and big groups, to name a few - even SteriPen freely admits this. But, there's a ton of situations where this thing is perfect. I love, love, love this thing for long trail runs in the mountains. Small enough to fit in a running vest or even most lumbar packs. No more choking down chemical treated water. Also great for general day hikes and short solo/duo backpack trips. For longer trips, especially if there's more than one person, I still think a filter is more practical. You may be disappointed in the SteriPen if you buy it as a replacement for a filter - but if you look at it as a different sort of water treatment device altogether, it's brilliant.

I've used SteriPENs for a long time, but recently upgraded to this model. Simply put, I recommend going with this model over the cheaper alternatives for several reasons: size, battery life, battery type, and weight. It's smaller than many models, which makes a big difference when packing for a trip. I keep mine in a shoulder pocket on my pack so that I can easily use it without unpacking my bag. Next is battery life and type. It's more efficient than cheaper models and you don't have to use clunky AA batteries. This takes two small CR123 batteries, which are both lighter, and seem to last longer. I previously had the SteriPEN Photon Traveler and it requires 4 AA batteries -- it's heavy as hell! Bottom line, if you want a SteriPEN that's small, durable, and efficient, choose the Adventurer. Also, it works well with hydration bladders and water bottles. I've noticed it's a little awkward using this in a bladder because the light becomes hard to see (so you don't know if it's on or not). It's easy to find out, but it's still a little awkward.

If you're in an area with readily available water sources, like the John Muir Trail, the SteriPEN series of products are the best choice for purifying water. Lightweight thru hikers swear by tablets, but you have to wait 20-30 minutes for those to do the job, and the water generally tastes bad because of the chemicals. The pen is a bit heavier, but well worth the slight penalty. I managed 7 days of use for 2 people on one set of batteries. Will not work as well in cloudy or muddy water, but you'd want to use a pump in those situations anyway.

I've used several different treatment/filtering systems ranging from UV, to filters to chemicals, and his is my go-to method for sure! I Love this thing when it comes to a clean mountain creek, or babbling brook. The down side of this light is that if the water tastes bad, this won't change anything, and it requires the use of CR123 batteries which can be hard to find and slightly expensive but all in all it is worth it! I would highly recommend this to friends and would replace it instantly if it was lost, stolen or damaged beyond repair! LOVE IT!

I got a new perspective being in a large group of people hiking and climbing on Rainier. I am like a camel and I seem to keep my fluids inside me. Or I sweat them out. I was amazed how much people pee everywhere. Yeah, that stream at Pebble Creek coming out from the Muir snow field looks like it would be fine to drink from without treating. Not a chance in hell Batman. I saw more people peeing all over the place just a stones throw away from the stream. I am also pretty sure I saw a marmot intentionally peeing and defecating upstream from a Chinese family taking sips directly from it as they took a break from their marmot molestation photo shoots. Payback is a bitch. Yeah, You need to treat your water. This steri pen is so quick and easy to use. Are there still some parts per million pee in your water? Sure. But what are you gonna do? I saw pee stains all the way up Rainier and the very top is like a volcanic pee trough. Folks, you are drinking someones or somethings pee one way or the other. I prefer this one to the classic. Not as big and clumsy feeling.

Battery Life: I have used the Adventurer Opti all summer long and just had the battery run out on my last trip. I typically use the Adventurer Opti 1 to 2 days a week filtering about 2 liters per day. I would say if you're an avid outdoor junkie who gets out every week than you would only need to replace the battery in the Opti every 2 months. I've used the SteriPEN Classic for about 5 years and the battery life is roughly twice as long when using high quality lithium AA's. SteriPEN has a comparison chart with number of treatments per charge (.5L) but I always do 1L increments due to using a 1L Nalgene. Even in .5L increments the chart does show the Classic having twice the treatment cycles per charge, confirming my real world experience. It shouldn't be a surprise that the Classic has twice as many cycles per charge because the Classic uses 4 AA batteries while the Opti uses only 2 small CR123 batteries. Durability and Use: I've used the Classic for 5 years and haven't had a single issue and have only used the Opti for 3 months now. The biggest difference comes in at length and weight. Opti is about 6 1/4 inches long with 4.5oz trail weight (batteries and case). Spare batteries only weigh 1.1 oz because the Opti uses CR123's. The classic comes in at 7 3/4 inches long and 6.6 oz trail weight. Spare batteries weigh 2 oz due to the 4AA's. While the Opti is a little less convienient to use in the field, the weight savings and much smaller design has made me keep coming back to the Opti. ***The extra 20$ for the SteriPEN Adventurer Opti is worth the cost as it retains most of the great features of the classic but in a lighter, more compact design. *** Complete comparison of the Opti and classic at: http://sunrisegear.blogspot.com/2014/09/steripen-adventurer-opti-vs-classic.html

Used this all summer long and never got had an issue with sickness. Much better than pumping. 90 seconds gets you a liter of water. I carry an extra set of extra batteries as a backup but made it through one season without burning up batteries. Its not cheap but the weight and time savings are well worth it In my opinion