The Streaming Current Monitor from Micrometrix Corp. measures particle charge and is used for monitoring and controlling coagulant dosage. The device responds to changes in raw-water quality and helps prevent plant upsets. It can be interfaced with SCADA for process trending and automation. The sensor has a replaceable probe sleeve that extends sensor life. It can help optimize treatment and help save up to 20 to 30 percent in coagulant costs. 770/271-1330; www.micrometrix.com.