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READY-TO-MOUNT DIGITAL ORP / pH CONTROLLER WALL SYSTEM: PROGRAMMABLE DIGITAL ORP/PH CONTROLLER COMPLETE WITH FLOW CELL, FLOW SWITCH AND SAMPLE VALVES, ORP AND PH PROBES, 40' OF BLACK 3/8" TUBING, 100' CLEAR 7/16" TUBING, FITTINGS AND 2 PERISTALTIC PUMPS (32 GPD) COMPLETE SYSTEM FACTORY MOUNTED TO A POLYPROPYLENE BOARD.