method and device for the rapid determination of bacterial contamination of blood and blood products

摘要

The invention relates to a method for determining a number of microorganisms in a liquid sample. The inventive method consists in applying alternative multifrequency current to a sample portion, measuring impedance on at least said liquid sample portion in reaction with at least certain alternative frequencies, in computing at least one element of an equivalent electric circuit of the sample on the basis of the impedance measured on at least one portion and, afterwards in evaluating the microorganism population in said sample on the basis of at least computed elements. A devise and a capacitance probe for carrying out said method are also disclosed.