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Sensor Spot for Use with the SDR SensorDish® Reader

Oxygen Sensor Spot SP-PSt5

This oxygen sensor spot can be integrated in the customer’s transparent vessel, which can then be read out contactless with the SDR SensorDish® Reader. The SP-PSt5 comes pre-calibrated. It has an optical isolation layer shielding the oxygen sensitive dye, so this sensor can be used in ambient light or even at illumination, e. g. when measuring photosynthesis. The sensor spot can be cleaned with ethanol and is therefore reusable.

  • Non-invasive oxygen measurements
  • For use of user-specified vessels with the SDR
  • Pre-calibrated
  • Re-usable
  • Optical isolation

Applications

Real-time Monitoring of the Respiration of Marine Zooplankton

Oxygen consumption of 3 - 4 copepod nauplii per sample was monitored in air-tight glass vials for 6 h. The nauplii were offered phytoplankton at environmental concentrations. Feeding and faecal pellet production rates were estimated simultaneously. The respiration rates were linear and steady, thus revealing that the nauplii were neither influenced by the vessel walls nor by diminishing of food. The respiration rate was compared to literature values of other species.The higher oxygen consumption of the nauplii was presumably due to constant feeding.

Dr. Marion Köster, Ernst-Moritz-Arndt-Universität Greifswald, Germany, Mar Ecol Prog Ser 353: 157-164 (2008)


Technical

Specifications
*in physiological solution, + 37 °C
Measurement range0 – 50 % O2
Resolution*± 0.4 % O2
Accuracy*± 1 % O2
Drift*< 0.2 % O2 within one week (sampling interval 10 min.)
Measurement temperature rangefrom + 15 to + 45 °C
Response time* (t90) < 30 sec.
Properties
CompatibilityAqueous solutions, ethanol (max. 10 % v/v), methanol (max. 10 % v/v), pH 2 - 10
CalibrationPre-calibrated

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