Katadyn Steripen Classic 3 UV Water Purifier with Prefilter

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Trusted in the mountains and on international trips, the handheld Katadyn Steripen Classic 3 UV water purifier with prefilter is simple and quick to use to ensure your water is safe for drinking.

  • Features

    • This updated version of the Classic has a new LED display, a more ergonomic design and the ability to accept alkaline, lithium and NiMH batteries (sold separately)
    • Ultraviolet (UV-C) light rays safely purify clear water by destroying 99.99% of protozoa (including giardia and cryptosporidia), bacteria and even viruses
    • To purify your water, just click a button and gently agitate the water with a quick stir
    • If clear water is not available, no worries—the included prefilter clears particulates and debris from water
    • To use the prefilter, remove filter cartridge, insert the Steripen Classic 3 into the prefilter's center, turn bottle upside down and gently rock back and forth to agitate
    • Prefilter fits Nalgene® and most other water bottles with 63 mm wide-mouth openings; pour source water through filter, and clean water enters bottle
    • Purifies 16 fl. oz. (0.5L) of water (cold or warm) in less than a minute or 32 fl. oz. (1L) in a minute and a half
    • Small size fits most containers—use it in cups, mugs, water bottles and canteens
    • Steripen Classic 3 turns itself off once ultraviolet treatment is complete; can be used up to 8,000 times!
    • With 1 set of AA lithium batteries, the Classic 3 purifies up to 150L of water; with 1 set of 2,300mAh NiMH batteries, the Classic 3 can purify up to 100L of water
    • Alkaline batteries are not recommended for repeated use
    • Includes Katadyn Steripen Classic 3 UV water purifier, prefilter and instruction manuals; batteries not included


    View all Katadyn Ultraviolet Water Purifiers
  • Technical Specs

    Best Use


    Filter Type


    Filter Medium

    Ultraviolet light


    Protozoa, Bacteria And Viruses

    Pump Force

    Not applicable

    Pump Strokes per Liter

    Not applicable


    32 fl. oz. per 90 sec.

    Housing Material

    Not applicable

    BPA Free


    Field Cleanable



    7.3 x 1.7 x 1.7 inches


    4 AA

    Liters Treated Per Set of Batteries or Charge

    Alkaline batteries: 50L / rechargeable: 100L / lithium: 150L


    With batteries: 6.3 ounces

  • Reviews
    45 reviews with an average rating of 3.4 out of 5 stars

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