Instantaneous and pulseless flow into microfluidic chips

Control pressure and apply smooth flow into microfluidic devices

microfluidic elveflow pulseless flowWhen using syringes or peristaltic pumps, hysteresis and fluidic connections compliance make it hard to achieve instantaneous flow changes in microchannels. A syringe pump imposes flow rates. The flow rate’s stability strongly depends on the tubing and microsystem’s mechanical characteristics.

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As a consequence, a syringe pump or a peristaltic pump can establish a stable flow rate in an elastic tubing environment; but it will result in long equilibrium times. On the other hand, using a syringe pump with rigid tubing will result in shorter response times; but important pulsations will appear due to mechanical hysteresis.

Thus, for many microfluidic applications, one cannot use syringe pumps or/and peristaltic pumps without facing hysteresis, long equilibration times, irreproducibility and/or pulsing flow phenomena.

That is why such fluid handling devices usually don’t fit with experimentations at a microfluidic scale.

How to overcome such drawbacks?

Controlling flows with Elveflow® pressure pumps leads to completely different behaviours. Time response no longer depends on the compliance of the tubing and microsystem; once the pressure is applied, the effect spreads instantaneously in the whole device. Besides, in many cases, adjusting flows in a microfluidic network controlled by the Elveflow® pressure pump is easier and more accurate than using volume-based pumps.

Can I control both pressure and flow rate?

Elveflow® pressure pumps are more than simple pressure controllers. Each Elveflow® pressure pump combines an intuitive pressure controller AND a pressure generator, for an accurate fluids handling. And depending on your microfluidic application, our optional flow meters will enable you to measure and control flow rates within your microfluidic experiment.

WORLD LEADER IN HIGH PERFORMANCE MICROFLUIDIC FLOW CONTROL

We  provide the only microfluidic flow control system using Piezo technology that enables a blazing fast flow change in your microdevice.

Piezo electric microfluidics flow control