Low-Cost digital impedance meter for the detection of micro-organisms

FELICE, CARMELO JOSÉ; CLAVIN, OSCAR ERNESTO; SPINELLI, JULIO CESAR; VALENTINUZZI, MÁXIMO EUGENIO; GALLO, BEATRIZ DEL VALLE

Journal of Biomedical Engineering

Año: 1988 vol. 10 p. 448 - 452

The digital impedance meter is a microprocessor based instrumet able to detect, quantify and identify microorganisms. The equipment makes use of the bipolar technique of measuring the impedance modulus as six cells containing inoculated culture broth. It perfoms temperature compensation  automatically. Growth curves are stored in memory as time course events and can be displayed on any suitable device.