Designed for sample preparation, the pumps are suitable for automated laboratory applications such as dispensing and collecting samples and reagents. The self-priming unit accommodates 0.1- liter to 350-gpm flow rates, withstand pressures to 232 psi, and provide up to a 30-ft suction lift. There are no internal universal joints, valves, dead corners, or glands to impede flow. The pumps are reversible for back flushing lines.

Watson-Marlow Bredel, 37 Uptown Technology Park, Wilmington, MA 01887, (800) 282-8823,