FIELD: medicine, in particular, automation of laboratory clinical methods of examination. SUBSTANCE: the device has a base, body, fixed sensor head including a source and a receiver of radiation installed in the same optical axis, means for holding the capillary tube that can be shifted in the vertical axis, plug preventing flowing out of blood from the capillary tube, circuit of comparison of the radiation power obtained by the radiation power with a threshold level forming the level of the logical unit at the output at exceeding of this level and of the logical zero in the reverse case, reducer increasing the accuracy of positioning of the blood specimen by decreasing the linear shift by one step, step-servo motor, step-servo motor control circuit, processor connected to whose input are the comparison circuit and the control circuit, output device, whose input is connected to the processor output. EFFECT: enhanced precision of determination of the parameters of precipitation of erythrocytes. 2 dwg
