The CX9000 delivers excellent filtration at a reduced cost. This product provides the same 0.5-micron filtration as the TX9000 without the extra stage of activated carbon for VOC/THM reduction, thus offering greater longevity at a lower cost. The CX9000 is designed and NSF certified for a flow rate of 0.5 gallons / minute and should be used with a dedicated filtered water faucet. It is the perfect choice to make a dramatic difference in drinking water quality when cost is a vital factor.