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Fast Oxygen Monitoring in Perfusion Systems
Flow-Through Cell Housed Oxygen Microsensor FTCH-PSt1
The oxygen microsensor housed in a flow-through cell is optimized for a fast response time (t90< 1 sec in gas, < 5 sec. in liquid). The microsensor with a tip size from < 50 µm to 140 µm is integrated in a sleeve made of Teflon® tightened with a silicone rubber, which is mounted to a T-connector. The liquid volume inside the FTCH is about 310 µL. External tubing with an inner diameter of 1.6, 2.3, and 3.2 mm can be connected via Luer-Lock adpaters. Liquids (e. g. water, blood, etc.) can be pumped through the cell. The FTCH-PSt1 has a measurement range of 0 – 50 % oxygen, with a detection limit of 0.05 % oxygen.
- Perfusion monitoring in smallest volumes
- High temporal resolution (< 5 sec.)
- No consumption of oxygen
- Measures in liquids as well as in the gas phase
Technical
| Specifications | Gaseous & Dissolved O2 | Dissolved O2 |
|---|---|---|
*after two-point calibration as described in the manual | ||
| 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 | Ethylene oxide (EtO) | |
| 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 | |
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Resources
FAQs
How do I import data into excel from a text file containing measurement data?
How does an oxygen sensor work?
How does salinity affect the oxygen measurement?
How does temperature affect the oxygen measurement?
The Stern-Volmer-equation
What is the time of delivery?
Which substances can interfere with the optical O2, pH and CO2 measurements?
Manuals
Brochures
Software
PreSens Datamanager version 2.0.0.57 - Windows XP/Vista/7/8
PreSens Oxygen Calculator version 3.1.1 - Windows 7/8/10