The Streaming Current Controller from Micrometrix Corp. monitors and controls coagulant/polymer dosage. It responds to changes in raw-water quality and prevents plant upsets. The controller has graphical data trending and alarm functions, and allows the user to customize parameters for the optional automatic cleaning system. The sensor has a user-serviceable probe, which extends sensor life. It enables optimized treatment and chemical savings of 20 to 30 percent. 770/271-1330; www.micrometrix.com.