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Syringe Pumps Explained: Types of Syringe Pump

Syringe pumps, or syringe drivers, are motorised devices that accurately control the movement of a fluid from a syringe by mechanically inserting or retracting the plunger. Syringe pumps feature stepper motors which can accurately move a platform attached to the plunger of a syringe. The body of the syringe is held steady to the body of the unit so that the only movement is from the action of the motor.

Basic models can be used for the infusion (and sometimes withdrawal) of liquids at set rate, controlled simply by changing the speed of the motor. More sophisticated syringe pumps like the Ossila Syringe Pump are equipped with onboard computers which allow the motion of the stepper motor to be programmed with multiple steps to automatically perform a set sequence.

Single vs. dual syringe pumps

As the name suggests, single syringe pumps are able to control one syringe, while dual syringe pumps can control either one or two syringes depending on the mode of operation. On syringe pumps like the Ossila Syringe Pump, each pump (whether on a single or dual pump model) can be used to either continuously infuse or withdraw a liquid, or provide a pulsed flow.

A single syringe operating in steady and pulsed infusion and extrusion modes

Single Syringe Pump

  • Precise
  • Programmable
  • Multiple Modes of Operation

£1600.00 With Free Shipping

When two syringes are controlled, a wider range of experimental setups can be used. For example, having two syringes allows for the precise mixing of two different solutions, as shown below. This process can allow for accurate control of chemical reactions in processes such as microfluidics and, in addition, could also be used for producing emulsions of two immiscible solutions.

Solution mixing with a dual syringe setup

When combined with equipment such as check valves and solvent reservoirs, dual syringe pumps can be used for continuous pumping of a single solution. Furthermore, syringe pumps like the dual version of the Ossila Syringe Pump allow each pump to be controlled independently of the other. This means that they can be used as a single syringe pump if required or, should the experiment require it, one pump can be set to infuse while the other is in withdrawal mode.

Dual Syringe Pump

  • Highly Versatile
  • With Two Independently Programmable Pumps

£2000.00 With Free Shipping

Contributing Authors

  • Jon Griffin
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