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DO-O2 Sensor

Name:    DO-O2 Sensor

Type:     TS2219

Port:     RJ45

Accuracy:     ±0.5mg/L&±2%

Range:     0-20mg/L&0-100%

Resolution:     0.01mg/L&0.1%

Function:     It's used to measure Ocontent in gas or solution. It's measurement is sensitive, accurate and quick.







  • 产品介绍
  • Typical experiment
  • Download


♦ This product consists of sensor and electrode. It can be used as both DO or O2 Sensor. It can be used ti measure concentration of oxygen in solution and air such as explore breathing regulation of saccharomycetes and compare the decomposition of peroxide under different condition.



♦  Connect electrode to datalogger and computer. Press the red button to measure dissolved oxygen in solution. Otherwise, it will measure oxygen in air.

♦  Open SWR iLab to calibrate O2 Sensor or demarcate DO Sensor.

♦  Immerse the electrode into solution or place it in the air to collect data using software.

♦  Rinse the electrode using distilled water and clean it using tissue.


♦ Preserve:

    a. Short term preserve: rinse the electrode using deionized water. Immerse the electrode measuring side into deionized  water.

    b. Long term preserve: screw off the cover of electrode and discard the liquid. Rinse cover and metal tube using deionized  water. Swing and dry them respectively. Screw back the cover to electrode and place the electrode in bag. Preserve it in dry place.

♦  Do not touch it to grease or other organic matter.

♦  If there is incrustation on the electrode, immerse it in 10% diluted hydrochloric acid for 3 minutes. Rinse it using water. If it is polluted by organic matter, immerse it in 80% ethyl alcohol for 10 minutes and rinse it using water.

♦  When using polarographic DO electrode to measure liquid (include using saturated dissolved oxygen deionized  water to full calibrate it), it is required that the liquid has mobility. There are two methods to make the liquid available:

♦  Inject filling liquid into cover to fill three quarters of volume of it. Screw back the cover tightly. Wipe out the waterlogging on the electrode. Touch the membrane at the top of cover to check if it is touching completely to the metal tube. There should be no gas bubble or solution interlayer. Connect the electrode to the device. Expose it in the air. Start the experiment after waiting for 45min.

Typical experiment

Typical experiment

♦  Compare the decomposition of peroxide under different condition


♦  Measure O2 content in gas

♦  Explore the combustion of candle

♦  Explore the gas human breath in and out

♦  Photosynthesis

♦  Explore breathing regulation of saccharomycetes


Instruction Manual

Link: Instruction Manual【TS2219_DO-O2 Sensor】_ENG


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