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Stability of microfluidic flow control instruments

Flow control stability measurement and comparisons

01 OB1 MK3 Pressure controller ELVEFLOW MICROFLUIDICS

The performance of your microfluidic flow control instruments depends on your experimental conditions (tank volume, output pressure, computer configuration, operating system, microfluidic setup… ). Our microfluidic specialists will gladly advise you on choosing the best equipment for your needs.

OB1 MkII Piezo technology VS. Electromechanic technology

OB1 MkII typical stability*: 0.005% s.d.

microfluidic flow control stability Piezo technology

Pressure stability over time at 150 mBar OB1 200 mBar output (2 mL output volume) and electro-mechanical technology (2 mL output volume). Real output pressure stability measured at 150 mBar with an external high accuracy pressure sensor (Druck DPI150)

* Short term stability measured for 1 min with a high accuracy sensor (Druck DPI150), excluding long term drift due to aging and environmental factor variations.

OB1 MkII stability- Real output pressure and internal pressure sensor

For demanding microfluidic researchers, maintaining a stable flow in their chip is essential – the pressure stability in a microchip is directly related to flow stability in the microchannel.

With the OB1, you will get a flow stability that is 20 times higher than other existing technologies available for microfluidic research (0.005% of the full scale).

Note that the pressure value which is displayed in your Elveflow software provides a visual indicator of the applied pressure changes.

The OB1 MKII internal pressure sensor used by the Elveflow software to display pressure has an additional electronic noise (0.05%) which does not rely on a real output pressure variation. As shown in the figure below, pressure noise in your microfluidic device will be 10 times less than the pressure displayed in your Elveflow interface.

microfluidic flow control stability

* Output Stability measured at 150 mBar with an external high accuracy pressure sensor (Druck DPI150) simultaneously displayed with the Elveflow interface monitoring.

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