Profile: Electro-Chemical Devices, Inc. specializes in industrial process instrumentation. We have sensors, controllers, transmitters, analyzers and electrodes. Our products measure pH, conductivity, dissolved oxygen, oxidation reduction potential, resistivity, selective ion for fluoride, calcium, sulfide and sodium. We provide a millivolt output signal for fast field analysis of samples, calibration verification or trouble-shooting of installed sensors. Our automatic boiler blowdown control system provides continuous control of the surface blowdown rate for commercial and industrial boilers. Our portable analyzer/calibrator product lines obtain fast, accurate pH and conductivity measurements. We also offer control systems for boiler blow down and cooling towers.