METHOD AND APPARATUS FOR THE HIGHLY ACCURATE, AUTOMATIC DETERMINATION OF THE HEMATOCRIT OF WHOLE BLOOD SAMPLES

摘要

New and improved method and apparatus for determining the percentage volume of cells in a conductive liquid are provided and comprise means to provide a reference signal, detector means operable in response to said reference signal to detect the conductance of said liquid and provide a conductance signal, means to modify said conductance signal in accordance with the conductance of a portion of said liquid from which said cells have been removed, means to further modify said conductance signal in accordance with a cell shape factor, and means to respectively sum, convert and divide said signals to provide indicia of said percentage cell volume. In a second embodiment, temperature responsive means are substituted for said first-mentioned conductance signal modifying means and are operative to modify said conductance signal in accordance with changes in ambient temperature.