The plug-and-play DC80 dechlorination analyzer from Electro-Chemical Devices uses a zero-shift methodology to provide accurate measurement and protect total chlorine sensors from damage. Chlorine is metered into the sample, shifting from a near-zero chlorine concentration to a measurable value. The analyzer’s offset function allows the metered value to be subtracted from the measurement. It monitors chlorine in drinking water, wastewater, cooling water and other dechlorination applications from 0.05 to 20 ppm. Its mounted system includes built-in flow control, advanced panel pressure regulators and rotometers. There is built-in automatic pH compensation for samples between 4 and 12 pH. The total chlorine sensor is a three-electrode amperometric sensor with a gold cathode, silver halide anode and 304 stainless steel counter electrode. 800/729-1333; www.ecdi.com.