The V-300 variable-speed metering system from Fluid Metering provides drift-free fluid control of lixiviant used in mining pilot plant hydrometallurgy. Its CeramPump valveless rotating and reciprocation piston pump design eliminates the need for check valves, resulting in a pump that can handle a broad range of chemicals under varying conditions. It combines a QV valveless, variable-speed pump with a control unit to pump acids and solvents used in hydrometallurgy in the process area of leaching, as well as solvent extraction. The control unit can accommodate manual control, as well as accept a variety of industry-standard electronic control signals from process instrumentation. In addition to electronic speed control, the unit is capable of manual displacement adjustment and is available in a duplex design with independent pump head adjustment for proportional mixing and diluting. 800/223-3388; www.fmipump.com.