Steripen Pre-Filter


The SteriPEN Pre-Filter removes debris from water so the UV light can effectively destroy the microorganisms in it. Forms water tight seal with Steripen Classic 3, SteriPEN Ultra or SteriPEN Aqua.

SKU: W04 Category: Brand:


The SteriPEN Pre-Filter filters fits on Nalgene® and other 32 ounce wide-mouth water bottles and filters out particulates and debris. When in use, pour water through the durable 40×40 micron screen filter cartridge to fill the bottle. Then you’re ready to purify the water with a SteriPEN UV water purifier. Remove the filter cartridge from the Pre-Filter, insert the SteriPEN into the center of the filter, flip the bottle, and agitate the water until the SteriPEN indicates the treatment is complete.


  • Size: 1.85 in. (47mm) x 2.6 in. (67mm)
  • Weight: 1.5 oz (43g)
  • 40 micron durable nylon screen
  • Reversible cartridge for compact convenient storage
  • Dual water seals to prevent contamination of drinking surface
  • Used with Nalgene® and other 32 ounce wide-mouth water bottles



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