The dual-channel T80 universal transmitter from Electro-Chemical Devices measures DO, pH or five other common liquid parameters. Self-configuring electronics provide fast, easy plug-and-play monitoring. A single unit can monitor turbidity, DO, pH, ORP, pION, conductivity or resistivity. It can combine with the Triton TR6 sensor to measure suspended solids or turbidity in four selectable dual ranges with preset low and high ranges from 0 to 4,000 NTU. It measures turbidity in milligrams per liter, parts per million and percent solids. Turbidity measurements are calibrated to the user application. The pH sensors come in an insertion/submersion configuration or a valve retractable configuration with flared end to prevent blowout. 800/729-1333; www.ecdi.com.