Steripen Pre-Filter

When clear water is not available, the Pre-Filter filters out particulates and debris with its 40 micron filtration screen, so that UV light can then be used to effectively destroy the microorganisms in it.

It forms a watertight seal with Steripen® Classic 3 and Steripen® Ultra,™ and fits most wide-mouth water bottles.

To use, simply 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. The Pre-Filter can be used to fill a water bottle via two direct methods: via Pour Through and via Immersion.

Features:

• Filters larger particles from river or lake water.
• 40 micron durable screen.
• Attaches to most wide-mouth water bottles.
• Pour water in, or submerge bottle to fill through filter.