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Kuhner Technology


Essential O₂ regulation for stem cells

A reliable control of O2 is essential for cultivating cells (proliferation and metabolism of stem cells) and microorganisms with low/no oxygen demand. The O2 controller reduces the O2 level from ambient (20.95% at dry air; normoxia) to approximately 0% O(hypoxic). A digital PID controller adjusts the N2 flow rate to maintain the desired O2 value.

Technical data

O2 sensor

zirconium oxide

Measuring range

approximately 0% up to ambient O2 (20.95% at dry air)

Accuracy, absolute

±0.40% at 5% O2

O2 sensor stability

±0.5% full scale/year

Setting, digital

± 0.1%

O2 control

PID, digital

Temperature range



max. 0.5...0.8 bar overpressure

Technical data subject to change

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