The Chem-Pro M Series of diaphragm metering pumps from Blue-White Industries is designed for precision liquid injection in municipal water treatment applications. It includes NSF 61 listing, a 200-1 turndown ratio, an LCD screen, 4-20mA output and a stainless steel pump head cover. Communication options include industrial Ethernet, Modbus TCP, ProfiNet, Modbus and Profibus. 714/893-8529; www.blue-white.com.