Description
Myron L (6PIIFCE) Ultrameter II: Meter Conductivity, TDS, Resistivity, pH, ORP Free Chlorine, Temperature Aries (AF 20 2012) 20" x 2.5" (2 lb) KDF 55 GAC Filter } The Clack R7031 20K is } The Clack R7031 20K is a 110V deionization (DI) monitoring light designed to provide instant visual feedback on water quality using a 20K OHM Resilite sensor no setup or adjustment required