Abstract
Summary A new type of oscillometer made from a series of solid state circuits suitable for automatic titration and recording is described. The apparatus is simple and easy to build in the laboratory. The output potential of the recorder is obtained by unbalancing a differential amplifier. A peak, having height proportional to the frequency of the oscillating circuit is obtained at each addition of the reagent, added by means of an electric burette. The two branches of the titration curve are obtained by joining the tops of the peaks. Reactions of precipitation, neutralization, complexation and oxidation-reduction were carried out in order to check the apparatus. The system has been shown to permit a good reproducibility of results even at long time intervals. The system developed has been directed furthermore to automatic continuous monitoring of remote laboratory and pollution control.
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