Watch tutorials, webinars and informative videos about PreSens optical sensor systems.
Online Monitoring in Perfusion Systems with Single-use Sensor
Single-Use pH Flow-Through Cell FTC-SU-HP5-S
A miniaturized optical pH sensor is attached to a color coded stick, which can be attached to flow-through cells of different size and shape, according to requirements. A polymer optical fiber connects the sensor inside the flow-through cell to the pH meter. The single-use T-cell of the FTC-SU-HP5-S is made of polycarbonate and all parts come beta-irradiated.
- Single-use flow-through cell
- Precise online monitoring of pH in perfusion systems
- Different sizes and shapes for various flow rates
- Easy connection to external tubing
- Customized connectors are available, e. g. CPC
pH Monitoring in Liver Cell Bioreactor
An important aspect of efficient liver cell bioreactors is the automated regulation of physio-chemical culture parameters. A non-invasive pH regulation device for a perfusion bioreactor has been developed. The high performance of the system is based on one of our chemical optical flow-through cells for pH detection and its combination with precision mass-flow controllers for gas. The new controller allows long time stable and contamination free online pH regulation in complex bioreactor systems - an important technical contribution for future clinical applications.
Application Note by Marco Decker: pH Regulation for a Liver Cell Bioreactor
Online Measurement in Perfusion Systems
Beta-irradiated and pre-calibrated pH and DO flow-through sensors can be integrated into perfusion systems. This allows easy control of process parameters in perfusion reactors. Typically Luer connectors are used, though different sizes for larger or smaller flow rates are available.
|Measurement range||5.5 - 8.5 pH|
|Resolution||at pH = 7: ± 0.02 pH|
|Accuracy**||at pH = 7: ± 0.05 pH|
|Drift||at pH = 7: < 0.005 pH per day (sampling interval of 1 min.)|
|Measurement temperature range||from + 5 to + 50 °C|
|Response time (t90)***||< 120 sec.|
|Compatibility||Aqueous solutions, ethanol (max. 10 % v/v), methanol (max. 10 % v/v), pH 2- 10|
|Cross-sensitivity||Reduced to ionic strength (salinity); a high concentration of small fluorescent molecules in the visible range can interfere|
|Cleaning procedure****||Irradiation, Ethylene oxide (EtO)|
|Calibration||SSTs (sensor sticks) are pre-calibrated; single-point calibration is recommended|
|Storage stability||18 months provided the sensor is stored in the dark|
|T-cell formats|| Luer T-cell (delivered), inner diameter 5 mm, cell volume 0.3 mL;|
1/4" x 1/4" (Qosina), cell volume 2.1 mL;
3/8" x 3/8" (Qosina), cell volume 4.6 mL;
1/2" x 1/2" (Qosina), cell volume 8.3 mL
* provided pH sensors are used without further handling in physiological solutions
Polymer Optical Fiber POF
A polymer optical fiber (POF) is needed to transfer...
The pH-1 mini is a precise fiber optic pH meter. It is used...
The pH-4 mini is a fiber optic pH meter for simultaneous...
The pH-10 mini is a precise fiber optic pH meter for...
Electro-Optical Module EOM-pH-mini
The electro-optical module EOM-pH-mini is a precise OEM...