Katadyn Steripen 40 Micron Pre-Filter for Wide-Mouth Bottles

The Steripen Pre-Filter for Wide-Mouth Bottles filters debris such as sticks and leaves through a 40 x 40 micron screen filter cartridge to fill the bottle. Once filtered, you can purify with a Steripen UV Water Purifier. Remove the filter cartridge from the wide-mouth pre-filter and insert your Steripen UV Water Purifier into the centre, flip the bottle, and agitate the water until the Steripen UV Water Purifier indicates that the treatment is complete.    

Works best with the Katadyn SteriPEN Classic 3 UV Water Purifier.