SteriPEN Water Storage

Frequently Asked Questions

• How does SteriPEN UV-C purification work and what microbes does it remove?

  SteriPEN devices use UV-C light to disrupt the DNA/RNA of microorganisms so they can’t reproduce, treating clear water without chemicals or filter media. Models like the Ultra, Adventurer Opti, Classic, Traveler and UltraLight are rated to eliminate 99.9–99.9999% of bacteria, viruses and protozoa including Giardia and Cryptosporidium when used in clear water (0.5L in ~48–60 sec, 1L in ~90 sec).
• How does the SteriPEN Ultra compare to the Adventurer Opti and UltraLight for trip planning?

  The Ultra (USB-rechargeable Li‑ion, ~2200 mAh) is aimed at users who can recharge and want roughly 50L per full charge, while the UltraLight sacrifices some range (about 20L/charge) for lighter weight. Battery-powered models like the Adventurer Opti, Classic and Traveler run on CR123/AA cells and typically provide around 100L per fresh battery set, so they’re preferred where recharging isn’t available.
• What bottle openings and accessories are compatible with SteriPEN devices?

  SteriPENs require a minimum opening of about 1.75 inches (38–45 mm) to fit—common compatible containers include Nalgene wide‑mouth 1L bottles, mugs and many canteens; the tapered probe design helps insertion. Some models offer a 40‑micron pre‑filter attachment to remove debris before UV treatment, which is useful when sourcing from streams or murky taps.
• How should I use and maintain a SteriPEN in the field?

  Insert the lamp into clear water, agitate or stir as directed and let the unit complete its auto‑timed cycle (sensors prevent dry starts); treatment times are ~48–60 sec for 0.5L and ~90 sec for 1L. Keep sensors and the lamp dry between uses, recharge USB models (Ultra) via solar/laptop/car when possible, and carry spare CR123/AA batteries for Adventurer/Classic/Traveler units; always pre-filter turbid water before UV treatment.
• What is the expected lamp life and overall durability of SteriPEN devices?

  SteriPEN lamps are rated for roughly 8,000 activations (about 8,000 L of treated water), and units are built with rugged housings intended for backpacking and travel use. Battery longevity varies by model and usage—rechargeable Ultras hold charge for months while disposable‑cell models yield ~100L per battery set—so match lamp life, battery type and treatment volume to your trip length.