The Blackline Series MD from Pulsafeeder is a motor- driven, spring-return mechanical diaphragm pump for precise and accurate metering control. It includes oil-lubricated ball bearings in a die cast aluminum housing, long-life reinforced PTFE diaphragm, micrometer-style stroke length adjuster and many liquid end material options. Nine models are available, offering flow capabilities up to 132 gph and pressures to 150 psi, with a standard turndown ratio of 10-to-1 or up to 100-to-1 with the optional VFD Vector. Metering performance is reproducible to within plus-or-minus 2 percent of maximum capacity. 800/333-6677; www.pulsatron.com.