Luer Lock Adapter with Oxygen Sensor

O2 Sensor Stick SST-PSt7-US

This Luer Lock adapter is equipped with a miniaturized O2 Sensor Spot type PSt7 (max. measurement range 0 - 100 % O2). The Sensor Stick is connected to the oxygen meter with a 1 mm polymer optical fiber. This way continuous, non-invasive oxygen measurement can be performed. The O2 Sensor Stick can easily be integrated in customer specific flow-through cells or experimental set-ups via Luer connectors. The SST-PSt7-US is independent of flow velocity or electromagnetic fields and due to its small size it can be implemented in many set-ups where other oxygen measurement equipment simply does not fit.

  • Non-invasive oxygen measurements in a max. range of 0 - 100 % O2
  • Small size
  • Easy connection via Luer Lock
  • For customized integration & perfusion cell culture monitoring
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Online Measurement in Perfusion Systems

Beta-irradiated and pre-calibrated pH and DO flow-through sensors can be integrated into perfusion systems. This allows easy control of process parameters in perfusion reactors. Typically Luer connectors are used, though different sizes for larger or smaller flow rates are available.


Specifications Gaseous & Dissolved O2 Dissolved O2
*at 20 °C, 960 - 980 hPa; humidified gas mixture
**after customized calibration
***determined changing from 20.9 % oxygen gas to nitrogen 5.0
****determined changing from air saturated water to a freshly prepared 1 % sodium sulfite solution
*****recalibration may be required
Measurement range* Optimal: 0 - 50 % O2, 0 - 500 hPa
Max.**: 0 - 100 % O2, 0 - 1000 hPa
Optimal: 0 - 22.5 mg/L
Max.**: 0 - 45.0 mg/L
Limit of detection* 0.03 % O2, 0.3 hPa 0.015 mg/L
Resolution* 1 % O2 ± 0.02 % O2
20.9 % O2 ± 0.1 % O2
0.4 mg/L ± 0.009 mg/L
9 mg/L ± 0.04 mg/L
Response time (t90) < 10 sec.*** < 30 sec.****

Aqueous solutions, ethanol, methanol

No cross-sensitivity pH 1 - 14, CO2, H2S, SO2, ionic species
Cross-sensitivity Organic solvents, such as acetone, toluene, chloroform or methylene chloride
Chlorine gas
Cleaning procedure 3 % H2O2, acidic agents (HCl, H2SO4) max. 4 - 5 %
Sterilization procedure***** Irradiation
Ethylene oxide (EtO)
Calibration Sensor Sticks are pre-calibrated;
Two-point calibration in oxygen-free environment (nitrogen, sodium sulfite) and air-saturated environment)
Temperature range operation Optimal: 0 °C to + 50 °C
Max.: - 10 ° C to + 70 °C
Temperature range storage Optimal: room temperature (+ 20 °C ± 5 °C)
Max.: 0 °C to + 70 °C
Storage stability 5 years provided the sensor material is stored at room temperature in dry conditions and in the dark

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