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Bare Fiber Oxygen Microsensor with a Tip Size Thinner than a Hair
Implantable Oxygen Microsensor IMP-PSt1
This miniaturized optical oxygen microsensor is designed for various customized applications. The tiny probe has a tip size < 50 µm to 140 µm while the outer diameter ranges from 140 µm to 900 µm. The microsensor tip is not mounted into any additional housing. 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-PSt1 has a measurement range of 0 – 50 % oxygen, with a limit of detection of 0.05 % O2.
- High spatial resolution (< 50 μm)
- High temporal resolution (t90 < 3 sec.)
- Integration into customized housings and set-ups
- No consumption of oxygen
- Measurement in headspace & liquids
Technical
| Specifications | Gaseous & Dissolved O2 | Dissolved O2 |
|---|---|---|
| *after two-point calibration as described in the manual **TS: tapered sensor tip with a diameter < 50 μm and no optical isolation ***TF: flat-broken sensor tip with a diameter of 140 μm | ||
| Measurement range | 0 – 50 % O2 0 – 500 hPa | 0 – 22.5 mg/L 0 – 700 µmol/L |
| Limit of detection | 0.05 % oxygen | 20 ppb |
| Resolution | ± 0.01 % O2 at 0.21 % O2 | ± 0.005 mg/L at 0.09 mg/L |
| Accuracy* | ± 0.4 % O2 at 20.9 % O2 ± 0.05 % O2 at 0.2 % O2 | |
| Drift | < 0.1 % O2 within 30 days (sampling interval of 1 min.) | |
| Measurement temperature range | from 0 to + 50 °C | |
| Response time TS** (t90) | < 1 sec. (gas) | < 2 sec. (liquid) |
| Response time TF*** (t90) | < 15 sec. (gas) | < 30 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 Chlorine gas | |
| Sterilization procedure | Steam sterilization | |
| Cleaning procedure | 3 % H2O2 Ethanol Soap solution | |
| Calibration | Two-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and air-saturated environment | |
| 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?
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 are the exact dimensions / diameters of Implantable O2 and pH Microsensors?
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
Microx TX3 for PSt1 version 6.02 - Windows XP/Vista/7
OXY-4 micro version 2.30TX - Windows XP/7
OXY-10 micro version 3.33TX - Windows XP/7
PreSens Oxygen Calculator version 3.1.1 - Windows 7/8/10
USB Serial Driver for USB-RS232-RJ 4-4 - Windows XP/Vista/7/8
USB Serial Driver for USB Serial Adapter, single & multi-port - Windows 7/8/8.1