The Steripen Pre-Filter water, before using any of the Steripen Water Purifiers. 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.
* For solo use
* Suitable for clear water only
* Suitable for cloudy water
* For more frequent use
* Lightweight and portable for on-the-go adventures
* Stationary use
Not logged in