The FX-CL-O reagentless ozone analyzer from Foxcroft Equipment & Service Co. helps monitor and control dissolved ozone in real time. It is available with temperature-compensated sensors impervious to detergents and chemicals, or with sensors for potable water. No zero-point calibration is required. The low-maintenance unit includes 4.3-inch color touch-screen display and interface, configurable high/low alarm levels and delays, dry contact alarm relays, one 4-20mA output (up to four available), an RS485 serial port and microprocessor electronics with expansion capability. 800/874-0590; www.foxcroft.com.