An electrically-powered device intended to be used for the processing of whole blood specimens using centrifugal force to determine the haematocrit, i.e., the ratio of red blood cell volume to whole blood volume expressed as a decimal, fraction, or percentage. The device typically requires a smaller sample volume than conventional centrifuges (macrohaematocrit method). The haematocrit is typically used to diagnose blood loss and erythrocyte count above or below normal.