Oscillometry or High-Frequency Titrations

Oscillometry differs from conductometry in several respects. 

Electrodes are not in direct contact with the solution, but are usually separated from it by the glass walls of the container. 

Frequencies used are of the order of 10 to 10 Hz compared with 10 Hz for conductance. 

Instrument response is generally to a combination of resistance and capacitance. 

In conductance, the ions absorb energy which is translated into heat and motion. In oscillometry, we have not only this aspect, but also the capacitance effect in which molecules absorb and return energy each frequency cycle owing to the induced polarization and alignment of electrically unsymmetrical molecules. 

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