SteriPEN Emergency: Handheld UV Water Purifier Review


A few weeks ago we received a SteriPEN Emergency to review. A SteriPEN is a Handheld UV Water Purifier that is sturdy, durable and portable.  The SteriPEN Emergency purifies 200 half-liter servings of water on one set of AA lithium batteries using a reliable and effective UV lamp.

The great thing about the SteriPEN is that it is super easy to use. All you have to do is take the protective cap off and press the button, then wait for a green light to flash and put the bulb into the bottle of water. A few swirls later (90 seconds for a full liter)  you will have fresh tasting and safe drinkable water.

SteriPEN uses the power of ultraviolet light to make water safe to drink. The UV light kills a wide variety of bacteria, viruses,  protozoan cysts and all the things you do not want to have in your drinking water. The SteriPEN’s technology is the same technology used to purify water by leading bottled water manufacturers, as well as by major cities in the United States and Europe.


The SteriPEN Emergency is a great device to keep in your emergency first-aid kit. It is good to know that you can use it to purify your water in case of disaster or emergency or when dealing with compromised water supplies.  It is also fantastic for hiking, camping and outdoor adventures.

The SteriPEN would be also very useful when visiting countries with questionable water quality.  You can save money by not having to purchase bottled water and you can relax and enjoy your trip without having to worry about the water you are drinking.

We love the SteriPEN and how easy it is to use. We will be getting at least one more to put in the car for emergencies and we are looking forward to taking it with us on our next trip overseas.


  • Weight: 5.7oz. (162g) with lithium batteries
  • Size: 7.6″ (L) X 1.5″ (W) X 1.5″ (H)
  • Battery: Uses four AA lithium batteries (not included)
  • Battery Life : 200 treatments (16oz./0.5L)
  • UV Lamp Life: 3,000 treatments

Buy it: ($49.95) Get your own SteriPEN online HERE.

Disclosure: I received a sample of a product to facilitate this post. No other compensation was provided and all views and opinions stated on this post are 100% my own.

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Angela V

Founder and Writer at One Smiley Monkey blog
Hi, my name is Angela van Tijn and I live in Vancouver, Canada with my wonderful husband, our two boys and our puppy. I am the founder and primary contributor behind One Smiley Monkey. Welcome to my blog!

19 responses to “SteriPEN Emergency: Handheld UV Water Purifier Review”

  1. October 5- The wonders of science never cease to amaze me. The SterrPEN is a wonderful invention to help people feel safe in drinking water they have treated. Now, people can travel abroad and not worry about being ill or getting a ‘bug’ from the water. Kudos to the scientists and company who made this possible. Thank you for telling us about it.-el03ro

    • No problem Elva 🙂 Thanks for stopping by!

  2. wow i’ve never heard of this product but it’s so great! so convenient especially moms with little ones, when they are thirsty and all there is , is water that you know is not the best water , it’ll be great to have the water purifier so that we know our kids will remain healthy. Thanks for the info and review. I’ll be sure to try it! 🙂

    • It sure is Liz 🙂

  3. I had no idea these existed. What a great thing to have travelling or hiking. Thank you for the review.

    • You’re welcome KIm 🙂

  4. This would be sooo handy. Whoever invented it is a genius.

    • Can’t wait to take it on our next trip! 🙂

  5. Wow, this would be so handy! I would love to see this in action!

  6. Great product! Love discovering new products on blogs. Thanks for sharing 🙂

  7. We have a large unit that purifies our well water with UV, but I had no idea they made portable versions! How brilliant!

  8. This is really neat! I’d be skeptical on how well it works, but if it does that is amazing. Think of all of those people who say “don’t drink the water”. Now you can!

  9. Wow, this is so cool!

  10. This is a great device to have on hand while camping or hiking. Very interesting!

  11. FANTASTIC!! What a great device!! I’m going to look into getting a couple of these, both for myself & my Mom. Thanks for the info!

  12. I’ve never heard of this product,but its great !

  13. I love new products that are so handy and make us feel safe

  14. This is one fabulous emergency item that I just have to have. A few years ago I was advised to put together an in case of emergency or catastrophe kit because I’m disabled and getting anywhere quick is out of the question for me. So I now have a huge duffel bag with a crank radio, extra batteries, flashlight, some medical supplies that I personally will need along plus a first aid kit, sewing kit, dried foods, extra clothing for my family, food for our animals and a whole list of other products. That’s why this would be perfect to add to my kit and hey it sure doesn’t hurt to be prepared !


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