Award-Winning UV Water Purification. Versatile. Reliable.

Offered here is a Katadyn SteriPEN Classic 3 UV Water Purifier in good used condition – the latest and most versatile model in the award-winning Classic line and a Time Magazine Best Invention of 2001 winner. This UV water purifier eliminates bacteria, protozoa, cysts, and viruses from clear water sources, making it an essential tool for backpackers, travelers, and outdoor enthusiasts. Tested and working. No batteries included.

• Brand: Katadyn
• Model: SteriPEN Classic 3
• Type: UV Water Purifier
• Treatment Size: 0.5 liter or 1 liter
• Treatment Time: 48 seconds (0.5L) or 90 seconds (1L)
• Lamp Life: 8,000 activations (remaining life unknown)
• Battery Type: 4 AA (Lithium or Rechargeable NiMH) – NOT INCLUDED
• Approximate Treatments per Battery Set: 20-80-100 / 150 (varies by battery type)
• Weight: 178 g (6.3 oz)
• Length: 7.3 inches
• Width: 1.7 inches
• Height: 1.7 inches
• Water Source: Clear water, tap water
• Effective Against: Bacteria, protozoa, cysts, viruses
• Water Resistance: Improved water resistance over earlier models
• Condition: Used – Good

• UV Purification: Destroys bacteria, protozoa, cysts, and viruses without chemicals or pumping
• Dual-Treatment Modes: 0.5 liter (48 seconds) or 1 liter (90 seconds) – one-click or two-click operation
• 8,000 Treatment Lamp Life: Long-lasting UV lamp (remaining life unknown)
• Enhanced Ergonomics: Improved feel and handling over earlier Classic models
• Battery Efficient: Uses 4 AA batteries (Lithium recommended for best performance)
• Improved Water Resistance: Better protection against moisture than previous versions
• Compact & Lightweight: 178g – easy to pack for backcountry trips
• Award-Winning Design: Time Magazine Best Invention of 2001

• Overall: Good condition – tested and working
• Lamp: Remaining life unknown. The UV lamp has a rated life of 8,000 activations, but we do not know how many activations this unit has had.
• Batteries: NOT INCLUDED. Requires 4 AA batteries (Lithium recommended).
• Function: Tested and confirmed working with fresh batteries.
• Housing: Shows normal signs of use – light scratches and wear consistent with field use (see photos).
• Water Resistance: Improved water resistance design – not fully submersible.

• Battery Type: 4 AA batteries (Lithium or Rechargeable NiMH)
• Not Included: Batteries are not included in this listing
• Lithium Recommended: Lithium AA batteries provide the most treatments per set and perform best in cold weather
• Approx. Treatments (Lithium): 150 treatments
• Approx. Treatments (NiMH): 80-100 treatments (varies by mAh rating)

• Backpacking & Hiking: Lightweight water purification on the trail
• Travel: Purify tap water in areas with uncertain water quality
• Emergency Preparedness: Reliable water treatment in emergency kits
• International Travel: Compact solution for treating water abroad
• Base Camp / Group Use: Quick treatment for 1-5 person groups

• Katadyn SteriPEN Classic 3 – UV water purifier
• Not Included: Batteries (4 AA required)
• Not Included: Original packaging or additional accessories

Interested in more than one item? We offer a shipping discount on multiple purchases! Simply add all the items you wish to buy to your cart, then request an invoice and provide your zip code. We will calculate and apply the discounted shipping rate before you complete your payment. Local pickup is available - please contact us to arrange.