Watch tutorials, webinars and informative videos about PreSens optical sensor systems.
Bare Fiber Oxygen Microsensor for High Resolution Trace Oxygen Measurements
Implantable Oxygen Microsensor IMP-PSt8
This tiny probe has a tip size of 230 µm while the outer diameter ranges from 230 µm to 900 µm. The microsensor tip is not mounted into any additional housing, so it can be applied in various customized applications. The bare glass fiber tip can be mounted to your own housings, steel tubes and micro respirometer chambers etc. The small outer diameter even allows insertion into implantable Venflon-tubes. Moreover the microsensor can be deployed in sealed containers to measure the oxygen content directly. The IMP-PSt8 has a measurement range of 0 – 10 % oxygen, with a limit of detection of 0.007 % O2.
- High spatial resolution
- High temporal resolution (t90 < 3 sec.)
- Integration into customized housings or set-ups
- No consumption of oxygen
- Measurement in headspace & liquids
Technical
| Specifications* | Gaseous & Dissolved O2 | Dissolved O2 |
|---|---|---|
| *data for microsensors TF = flat broken sensor tip with 230 μm diameter **after two-point calibration as described in the manual | ||
| Measurement range | 0 – 10 % O2 0 – 100 hPa | 0 – 4.5 mg/L 0 – 140 µmol/L |
| Limit of detection | 0.007 % oxygen | 3 ppb |
| Resolution | ± 0.002 % O2 at 0.008 % O2 | ± 0.7 ppb at 3 ppb |
| Accuracy at + 20 °C** | ± 3 ppb or ± 3 % rel. | |
| Measurement temperature range | from 0 to + 50 °C | |
| Response time (t90) | < 3 sec. (gas) | < 10 sec. (liquid) |
| Properties | ||
| Compatibility | Aqueous solutions, ethanol, methanol | |
| No cross-sensitivity | pH 1 – 14 | |
| Cross-sensitivity | Organic solvents, such as acetone, toluene, chloroform or methylene chloride | |
| Sterilization procedure | Ethylene oxide (EtO), recalibration recommended | |
| Cleaning procedure | 3 % H2O2 | |
| Calibration | Two-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and a second calibration value optimally between 2 % and 4 % oxygen | |
| Storage stability | 60 months provided the sensor material is stored in the dark at room temperature | |
Related products
Resources
FAQs
Can I integrate an oxygen microsensor into a catheter?
Can I measure inside a tissue with fiber optic microsensors?
Can I use the Manual Micromanipulator with an implantable microsensor as well, or is it only for needle-type microsensors?
How can I prevent oxygen or pH microsensors from breaking when measuring profiles across tissue?
How do I import data into excel from a text file containing measurement data?
How do I use the oxygen microsensor for measurement in ice?
How does an oxygen sensor work?
How does salinity affect the oxygen measurement?
How does temperature affect the oxygen measurement?
How often will I have to exchange the microsensor?
I can see that about 1 mm of the tapered sensor tip of an oxygen microsensor is coated with material. Is all of this coating sensitive to oxygen and where exactly do I measure?
The needle tip of the microsensor is vibrating or not moving smoothly when I try to insert it in the sample with the Manual Micromanipulator. What can I do?
The Stern-Volmer-equation
What is the correct way for handling an oxygen or pH microsensor?
What is the difference between tapered and flat-broken microsensor tips?
What is the time of delivery?
Which substances can interfere with the optical O2, pH and CO2 measurements?
Manuals
Brochures
Software
PreSens Oxygen Calculator version 3.1.1 - Windows 7/8/10