Pre-Filter for Wide Mount Water Bottles

The Water Bottle Pre-Filter by SteriPEN® is designed to remove large particulate matter from drinking water prior to purification treatment.While the Pre-Filter can be used in conjunction with any purification method, it is specifically designed for use with the SteriPEN® Classic and JourneyLCD ultraviolet water purifiers. The Pre-Filter can be used in two ways: "Pour-through" and "Immersion".