The PWB2 Replacement Filters are designed for use with the Filters Fast Water Bottles. Both the FF16OZ Bottle and the FF27OZ Bottle use these replacement cartridges.
Each replacement cartridge lasts 80 gallons or 2-3 months based on average usage.
The PWB2 Level 2 Cartridge removes the following:
Tested and Certified by independent laboratories. Not for use with water that is microbiologically unsafe.