From ThomasNet: VICI Valco's Cheminert Model M6 and M50 Liquid Handling Pumps are a new generation of pumps for precision handling of liquids and/or gases, producing a bidirectional pulseless flow with a range of over six orders of magnitude (10 nL/min to 10 mL/min for the M6 Pump; 50 µL/min to 50 mL/min for the M50 Pump).
An excellent replacement for syringe pumps, the Cheminert pumps offer better performance and eliminate the need for refill cycles and syringe changes.
The M6 and M50 are positive displacement pumps, which means they are self-priming and tolerant of any gas which may find its way into the fluid lines. There is no separate fill cycle, and the capacity is unlimited.
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Liquid Handling Pumps offer alternative to syringe pumps