The SteriPEN Pre-Filter helps remove dirt and sand before you purify your water of bacteria with the SteriPEN, for more effectively clean water. It is specially designed to accommodate the popular style of wide-mouthed reusable water bottles. Simply screw the base of the Pre-Filter onto your Nalgene-style bottle, insert the filter cartridge, pour in your water, purify and go! Filter water wherever you go with confidence, knowing that it will both look and taste better.
- Prefiltering sediment reduces turbidity, increasing the effectiveness of SteriPEN purification
- Reducing particulates also makes for a more enjoyable drinking experience
- Adaptable for both pour-through and immersion filtering
- Forms a reliably tight fit with your water bottle
- Genuine OEM Product