Carbon Dioxide Concentrations |
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Students may use PowerLab to monitor carbon dioxide (CO2) concentrations in vitro and in vivo.
Students can use a variety of sensors to monitor CO2 levels in a solution and in resting or active animals. In addition to the range of sensors available from ADInstruments, PowerLab data acquistion systems may be used with third-party sensors that have an analog output.
Gas sensing electrodes typically work by allowing CO2 (or ammonia [NH3]) to diffuse across a permeable plastic membrane into the inner compartment of the electrode where they reversibly react with a buffer solution and in doing so alter the pH that the electrode senses. These electrodes can be connected to the pH Amp, whilst the pH Pod can be used when a separate reference electrode is not required. For more information please contact your nearest ADInstruments representative.
For measuring CO2 in air, the Gas Analyzer connects to the PowerLab and measures expired CO2 using an infra-red sensor. LabChart software can also be used for breath-by-breath measurements of end-tidal CO2. |