Choose from two Mega-Pure® deionization models: D2560-1 single (D1) or D2560-2 dual (D2) cartridge units. This deionization system reduces scale impurities and increases product purity. Allows for pretreating feedwater to most Mega-Pure® stills. Allows greater flexibility in meeting varying feedwater qualities. A Mega-Pure® deionizer connected to a Mega-Pure® still allows for automatic control of feed water. Temperature-compensated purity meter measures water quality and indicates when cartridges are exhausted. Flow valve precisely controls flow to still. Built-in drain valve for no-spill cartridge changes. Large cartridge capacity for extended cartridge use. Unit can be wall or bench-mounted.