The Proseries-M MD-3 chemical metering pump from Blue-White Industries provides precision chemical metering for the treatment of municipal water and wastewater. The hybrid MD-3 diaphragm metering pump has 2000-1 turndown ratio and provides smooth chemical dosing with no pulsation dampener required. Delivering 380 strokes per minute, the pump features PVDF wetted end fittings for over 14 inlet and outlet configurations and a zero-maintenance brushless DC drive. 714/893-8529; www.blue-white.com.