FlowCon 2/3/4




Stand-alone gas mixing device.




The Kuhner FlowCon has been developed for the R&D environment and the initial production steps in bioreactors with disposable bags. Whether stabilizing the pH in cell cultivations with CO2,or reducing oxygen concentration for microaerophilic organisms the FlowCon gas mixer meets all user needs.  The FlowCon can be used as a stand-alone device, or can be integrated with the Kuhner equipment family (incubator shakers, disposable bioreactors, …).


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Performance characteristics


  • Mixing up to four gases (also gas mixtures can be connected)

  • Selectable flow rate:  0-1 [sL/min], 0-20 [sL/min], 0-200 [sL/min]

  • ISIS-Software

  • Integration in Kuhner shakers

  • Integrated pressure sensor


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Compatible with different bioreactors



a) Stirred tank bioreactor

b) Other disposable systems

c) Orbital shaken bioreactor

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Up to four mass flow controllers ensure high accuracy and reproducibility of the gas mixture. The number of mass flow controllers can be adapted to individual requirements (FlowCon 2/3/4). An integrated pressure sensor prevents overpressure in the connected bioreactor, by reducing the gas flow in the first step and shutting off the gas flow in the second step. Step limits can be freely programmed by the user. Integrated air filters and back pressure valves ensure a long interference free operating time of the FlowCon.

The Kuhner ISIS software provides: data logging, programming and controlling. Technical controls for “21 CFR Part 11” compliance are built in to ISIS-X software.

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Technical Data

Technical data


Stand-alone gas mixing device.


FlowCon 2/3/4


Number of mass flow controllers 2, 3, or 4
Dimensions 225 x 158 x 430 mm (WxDxH)
Ambient conditions

5 - 40°C

max. 85 % rH


up to 4 gases, push connector 6 mm

+ air

+ oxygen

+ nitrogen

+ carbon dioxide

(gas mixtures can also be connected)

Input pressure 1 - 2 bar
Output 1, (tube fitting for tube ID 13 mm)
Flow rates

0 - 1 sL/min

0 - 20 sL/min

0 - 200 sL/min

Accuracy ± 1.5% from the end value
Stand-alone operation yes

ISIS (optional)

data logging,



Interface, standard CAN-Bus
Interface optional USB, Ethernet, digital, analogue
Power supply 90 - 230 V, 50 - 60 Hz
Pressure sensor Integrated, 0 -400 mbar, programmable, prevents overpressure in the connected vessel
Air filter Integrated, prevents blocking of the mass flow controllers
Back pressure valve Integrated, prevents reflux into the mass flow controllers

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