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Micro-invasive Measurements in Customized Applications
Implantable pH Microsensor IMP-HP5-ST-high
The implantable pH Microsensor IMP-HP5-ST-high is not mounted into any additional housing and is therefore ideally suited for implementation in customized applications. Unlike other optical microsensors, these sensors are based on plastic 250 µm fibers and not glass fibers, which makes them more robust and resistant against damage or breaking. IMP-HP5-ST-high are for measurements in high pH range (6 – 9 pH). The bare fiber tip can be mounted to your own housing, steel tubes, catheters, etc. As the IMP-HP5-ST-high is free of metal, it can be used in the presence of high electromagnetic fields and even NMR environment.
- High spatial resolution
- Measurement in smallest volumes
- Designed for customized applications
- Robust plastic fiber
- Integration into plant and animal tissue
- Optimized for culture media and physiological solutions
- Independent of electromagnetic fields
Applications
pH Measurement in Plants & Animals
pH Microsensors can be implemented in plant tissue or even in small animals. New insights in physiological aspects can be obtained. Due to the small size of the probes only a minimal disturbance will occur.
pH Measurement in Small Volumes
Due to the small dimension of the probe, pH measurements can be done in very small volumes - even in microtiter plates of a higher format like 384 or 1536. No need for reference electrodes - a real step forward, especially in small volumes. Of course, the measurement is independent of electromagnetical fields - this even allows measuring in NMR spectrometers.
Technical
| Specifications* | |
|---|---|
| *provided pH sensors are used without further handling in physiological solutions **equilibrated sensor kept in well stirred solution at + 37 °C | |
| Measurement range | 6 - 9 pH |
| Resolution | at pH = 7: ± 0.02 pH |
| Drift | at pH = 7: < 0.1 pH per day (sampling interval of 1 min.) |
| Measurement temperature range | from + 5 to + 50 °C |
| Response time (t90)** | at + 37 °C: < 30 sec. |
| Properties* | |
| Compatibility | Aqueous solutions, ethanol (max. 10 % v/v), pH 2 - 10 |
| No cross-sensitivity | Electrical fields, proteins |
| Cross-sensitivity | Reduced to ionic strength (salinity); a high concentration of small fluorescent molecules in the visible range can interfere |
| Disinfection procedure | One-time disinfection with EtOH (70 % v/v) or isopropanol (100 % v/v) |
| Cleaning procedure | Buffer, water, pepsin solution |
| Calibration | One-point or multi-point calibration procedure supported by PreSens Measurement Studio 2 software |
Related products
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Resources
FAQs
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 often will I have to exchange the microsensor?
How to prepare buffers of constant ionic strength and calibrate optical pH sensors?
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?
What is the correct way for handling an oxygen or pH microsensor?
Which buffers can be used for calibration of chemical optical pH sensors?
Why does my pH sensor not work in tap water?
Manuals
Brochures
Software
PreSens Measurement Studio 2 version 4.0.0 - Windows 10/11
PreSens Profiling Studio version 2.0.0 - Windows 10/11