The plug-n-play DC80 dechlorination analyzer from Electro-Chemical Devices uses a zero-shift method to provide accurate measurement and protect total chlorine sensors from damage. It monitors chlorine from 0.05 to 20 ppm and includes built-in flow control. Automatic pH compensation for samples between 4 and 12 pH eliminates the need for reagents. It has a three-electrode amperometric sensor with a gold cathode, silver halide anode and 304 stainless steel counter electrode. The counter electrode provides a stable base potential that minimizes drift. The total chlorine sensor has a microporous membrane that allows ions to diffuse in and out of the sensor, and graphically displays both the total chlorine and pH levels for easy trend analysis. It is available with either 110-240 VAC or 24 VDC power. 800/729-1333; www.ecdi.com.