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.
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