Quick Overview

When clear water is not available, use the Water Bottle Pre-Filter by SteriPEN. The Pre-Filter filters out particulates and debris. Fits on NalgeneĀ® and wide-mouth water bottles.

When using the Steripen Pre-Filter, 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 Steripen Pre-Filter, insert the Steripen UV Water Purifier into the centre of the filter, flip the bottle, and agitate the water until the Steripen UV Water Purifier indicates that 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


  • Dimensions: 5.1 x 7.6cm
  • Weight: 29g

Standard/Free shipping to major capitals takes 2-5 business days (after dispatch), with occasional delays.

Order before 11am - we usually ship the same business day!

Choose Express Post for priority packing and faster shipping.