Culligan Water Tower Membrane w/ Purple Band, 35 GPD Choose::Single and they are not suitable

and they are not suitable for potable water

Clear bowl for easy sediment visibility and cleaning (no tools required)

This kit includes the quick change cartridge sediment and carbon prefilters as well as the hollow fiber membrane

requires (4) AAA alkaline batteries

Culligan Water Tower Membrane w/ Purple Band, 35 GPD Choose::Single and they are not suitableThis Genuine Culligan Water Tower Replacement Membrane for your Culligan Water Tower and CTW 35 systems provides 35 gallons per day of fresh clean drinking and cooking water. The Reverse Osmosis (RO) membrane squeezes out dissolved substances, including radium, lead, cysts, and many others. It is recommended by Culligan that you check your membrane at least once a year. Features: Contaminant Reducer: The Water Tower Membrane #01013026 from Culligan