Katadyn Steripen Classic 3 UV Water Purifier

About This Item

SPECS:

  • 7.3 x 1.7 x 1.7 mm
  • Weight: 178 grams

DESIGN & DETAILS:

  • Uses a 40-micron pre-filter
  • Created with improved water resistance and battery life
  • An 8,000 treatment lamp delivers a lifetime of purification
  • Treatment size is 1/2 or 1 liter
  • Treatment time 48 or 90 seconds
  • The 40x40 micron screen pre-filter fits perfectly on wide-mouth one liter water bottles and removes particulates that can get in the way of UV light in water
  • Comes with 1 pouch and 1 prefilter

TECH SPECS:

  • Requires 4 AA batteries

  • Brand : Katadyn
  • Country of Origin : Imported
  • Web ID: 23KATUSTRPNCLSSC3CAC
  • SKU: 24819361

REVIEWS

4.6

31 Reviews

Steripen Classic 3

The best steripen on the market. Light, durable and easy to use. It’s nice to have the peace of mind knowing that you’ve eliminated possible viruses from your water

Reliable And Convenient

After using this on multiple backpacking and hunting trips in 2025, I believe. This purifier is so convenient compared to pump or gravity filters, it is worth the extra weight and batteries. I took three of my kids (under 12 year old) on a backpacking trip, and this saved me so much time and effort. It is easy to teach others how to use, so once I train my children, this will be an easy way for them to help. I appreciate the reliability of this purifier. I used this even after night temperatures dropped below freezing and did not have to worry about it freezing, unlike my backup micron filter (I kept that in my sleeping bag). Overall, this purifier is very convenient and reliable. The draw backs are the size and weight, which makes it less attractive for ultralight systems.

Battery Door Does Not Close

Great find for a quick trip to South America. The battery door does not close well and therefore extra care is needed when using the device for water treatment. I would not recommend trying to manage the door, the batteries, and a water bottle in places where batteries could be lost/dropped.

Clean Water

Wasn’t working great when I first started using it maybe it was the battery or how cold it was because we were up sheep hunting and malfunctioned a few times.

Great Little Back Up For Back-packing

I really like this Steripen, the ability to use fresh batteries makes it easier to swap out power source, instead of relying on an internal rechargeable battery.

Read All Reviews (31)