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Solvent-Resistant Oxygen Probe

  • Optical oxygen sensor for many polar and nonpolar solvents
  • Measures dissolved oxygen partial pressure in many pure or complex organic solvents
  • Sensor tip 1.5 mm in diameter
  • Proven REDFLASH technology
  • No oxygen consumption
  • >3 years shelf time

The solvent-resistant oxygen probe OXSOLV measures oxygen partial pressure in most polar and nonpolar solvents (except fluorinated and some chlorinated hydrocarbons). It is based on optical detection principles (REDFLASH technology) and can be used for short-term applications in pure and complex organic solvents. A list of tested solvents is available on request. The sensor tip consists of a stainless steel tube 1.5 mm in diameter and 150 or 40 mm in length.

Compatible oxygen meters

FireSting pro (FSPRO-x)
FireStingO2 (FSO2-x)
FireStingGO2 (FSGO2)
FireStingO2-Mini (FSO2-MINI-ST)

Available Versions

Item No. Description
(Tip Diameter / Length)
Time (s)**
in EU*
OXSOLV Solvent-Resistant Oxygen Probe
(1.5mm / 150mm)
Unprotected protruding tip
ca. 1m cable length
<10 s (liquid) 490 €
OXSOLV‑PTS Solvent-Resistant Oxygen Probe
Protected Tip (1.5mm / 40mm)
ca. 1m cable length
<10s (liquid) 490 €

* Only EU-Prices shown. Contact us for pricing outside EU. Not for resale.

** Typical response times for 90% signal change (T90).
     For liquids: measured for the transition from air into a stirred solution of 1% Na2SO3.


Given for 2-point calibrated oxygen sensors at 20°C and 1013mbar absolute pressure in default measuring mode.

Measuring range 0-200 hPa O2
Detection limit 0.1 hPa O2
Resolution at 1 hPa O2 0.1 hPa O2
Resolution at 10 hPa O2 0.5 hPa O2
Resolution at 210 hPa (air saturation) 10 hPa O2
Precision +- 2% of sensor reading
Accuracy +- 5% of sensor reading
Temperature range 5 to 45°C
Application areas Laboratory, industry, research. Not for medical or any other safety-critical applications. Not for application in humans or in food intended for human consumption.
Compatibility Tested pure and complex organic solvents (listing on request), aqueous solutions, ethanol, methanol, isopropanol,
No cross sensitivity pH 1-14, CH4, CO2, H2S, any ionic species
Sterilization Ethylene oxide (EtO), 70% ethanol, 70% isopropanol
Cleaning 3 % H2O2, ethanol, soap solution
Storage time >1 years in darkness at room temperature
Calibration 2-point calibration
Dimensions Total length ca. 250 mm (from needle tip to cable), shaft diameter 8 mm
Connector ST-plug
Cable length 1m