The Vantage 5000 peristaltic metering pump from Verder incorporates stepper motor technology, in which a high-torque motor designed for position control moves in 1.6-degree increments, allowing for precise control at extremely low speeds of less than 0.1 rpm. Stepper motors do not require additional hardware, and the high-torque characteristic eliminates the need for a gear reducer. It combines the accuracy of a 4,000-1 turndown with high discharge pressures, a real-time event clock, a USB backup port, and can have seven digital inputs and four digital status outputs. 877-476-3569; www.verder-us.com