Easy Integration into Transparent Vessels for Online Oxygen Monitoring

Self-adhesive Oxygen Sensor Spot SP-PSt3-SA

With the new self-adhesive technology it is easy to integrate these sensor spots in nearly any transparent glass or plastic vessel. The oxygen is measured contactless and non-destructively from the outside – through the vessel wall. The SP-PSt3-SA has a measurement range of 0 – 100 % oxygen in dissolved or gaseous phase and can therefore be used for measurements in liquids as well as in headspace. These sensor spots are extremely versatile and can be applied from biotechnological applications up to quality checks for packed or bottled products.

  • Simplified integration with new self-adhesive technology
  • Compatible with glass & nearly all plastic vessels
  • Pre-calibrated & ready-to-use
  • Online monitoring without sampling
  • Non-invasive measurements through the vessel wall
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Specifications Gaseous & Dissolved O2 Dissolved O2
*after two-point calibration as described in the manual
Measurement range

0 – 100 % O2

0 – 1000 hPa

0 – 45 mg/L

0 – 1400 µmol/L
Limit of detection 0.03 % oxygen 15 ppb

± 0.01 % O2 at 0.21 % O2
± 0.1 % O2 at 20.9 % O2
±0.1 hPa at 2 hPa

± 1 hPa at 207 hPa

± 0.004 mg/L at 0.091 mg/L
± 0.04 mg/L at 9.1 mg/L
± 0.14 µmol/L at 2.83 µmol/L

± 1.4 µmol/L at 283.1 µmol/L
Accuracy* ± 0.4 % O2 at 20.9 % O2
± 0.05 % O2 at 0.2 % O2
Drift < 0.03 % O2 within 30 days (sampling interval of 1 min. / at 0% oxygen)
Measurement temperature range from 0 to + 50 °C
Response time (t90) < 6 sec. < 40 sec.
Compatibility Aqueous solutions, 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
Sterilization procedure Ethylene oxide (EtO)
Gamma irradiation
Cleaning procedure Aqueous solutions
Do not expose to ethanol!
Calibration Two-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and air-saturated environment

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Can the customer integrate the optical sensor spots by himself / herself? Do I have to mount the sensors in the dark because it says "Protect from light" on the packing? Do the sensors work in turbid solutions? How can I convert an oxygen value into a different oxygen unit? How can I prepare the calibration solutions cal0 and cal100 for oxygen sensors? How do I import data into excel from a text file containing measurement data? How do I verify whether the oxygen sensor is giving correct readings (performance proof)? How does an oxygen sensor work? How does salinity affect the oxygen measurement? How does temperature affect the oxygen measurement? How many samples should I use to perform a batch calibration? In which vessel can I integrate a sensor spot? Is the glue or the sensor spot biocompatible - which tests were done? Are there any studies on leachables and extractables? Is there a standard recommended distance to place the polymer optical fiber (POF) from the sensor spot? The Stern-Volmer-equation What are the response times for the oxygen sensors based on the 2 mm fiber like non-invasive oxygen sensors and oxygen probes? What does -YAU, -NAU or -SA stand for in the oxygen sensor spot names and what is the difference between those sensor types? What factors will affect the oxygen reading? What is the time of delivery? Where do I need sensor spot sizes different from the common diameter of 5 mm (approx. 0.2 inch)? Which glue can I use to integrate optical sensor spots? Which substances can interfere with the optical O2, pH and CO2 measurements?




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