About This Replacement RO Membrane Filter for C01 Countertop RO System 2-Stage Filtration - Purewell C01-PR reverse osmosis filter combines advanced carbon fiber and a 0.0001micron RO membrane to effectively eliminate over 1000 contaminants (99.99%). This includes chlorine, fluoride, lead, heavy metals, arsenic, chloramine, TDS, limescale, VOCs, and more. Advanced 100 Gallon Composite RO Membrane Filter - Utilizing a high-quality 0.0001 micron RO membrane, this filter removes 99.99% of over 1000 contaminants, including chlorine, lead, heavy metals, fluoride, mercury, VOCs, chloramine, arsenic, and more. Quick & Simple Filter Replacement - Replacing the C01-PR RO membrane filter is straightforward, requiring just a simple twist. The twist-in design makes it easy to replace the filter without any tools. Remember to reset the filter life indicator after installing the new filter. Extended Filter Life - It is recommended to replace the C01-PR composite filter every 12 months. However, the actual replacement interval depends on the quality of your feed water and your daily water consumption. Overview Brand : Purewell Material : Acrylonitrile Butadiene Styrene Included Components : Filter*1 Item Weight : 2 Pounds Model Name : C01-PR Manufacturer : Purewell Number of Items : 1 Unit Count : 1.0 Count