Watson Marlow Pumps Group 400 Series Model 403U/VM4

VM4 4 channels Flow rates from 0.001 to 17 ml/min per channel Ten stainless-steel rollers with low-friction bearings Digital speed control via top panel mounted keypad. Reversible with Max priming function. 403/VM pumps provide extremely accurate multi-channel pumping, having spring-loaded tracks with individual occlusion adjustment. The VM rotor has stainless-steel low-friction rollers for low pulsation and repeatable flow rates. The fixed position clamping block provides easy tube loading and removal. Pumpheads accept standard two-bridge manifold tubing. With 20:1 speed control, the 0.5 to 10rpm drive provides low flow accuracy and the 2.5 to 50rpm drive provides higher flows. All pumps accept 4-20mA or 0-10V analogue signals and remote low voltage or TTL (PLC compatible) start/stop and direction switching. Two-year comprehensive warranty.