This model can optionally be mounted under the sink with the optional under the sink kit . Mesh Plate Electrodes -Five of the most advanced mesh platinum-titanium electrodes in the world backed by Emco Tech's reputation. DARC Cleaning System -Will completely eliminate mineral scaling from the ever-important electrodes – increasing the life of your ionizer. It also means you never have to wait for a cleaning cycle to finish before you get another glass of delicious ionized water. Patented Emco Tech Biostone® Filter-The enhanced performance and functionality of a dual filtration system (2 filters) which includes the revolutionary and patented 9-stage Biostone filtration system.