Watson-Marlow Bredel, of Wilm-ington, Mass., introduces its new 520 Du peristaltic pump. Designed to handle the most corrosive fluids with reliable and accurate metering performance, it’s ideal for environmental processing applications. The pump is equipped with a high torque, microprocessor-controlled drive ensuring a higher range of flow rates up to 875,000:1 turn-down ratio. The large swept volume of the pump head provides greater volumetric displacement per revolution resulting in longer tube life. ? Circle 220 on Reader Service Card ?