FIELD: physics, optics, instrument engineering at investigation of suspension of light dispersing particles in optically transparent medium, in biology, medicine, at investigation of suspensions of erythrocytes, cells, organoids, tissues. SUBSTANCE: device has two sources of laser radiation, two sources of formation of light beams entering the flask with material under investigation, seat for location of the flask with material under investigation provided with a heater, system for formation of the part of the light beam that has passed through the material under investigation, whose longitudinal axis is directed at an angle to the axis of the light beam entering the material under investigation. One source of laser radiation radiates light in the red spectrum, the other - in the near infra-red spectrum, from which the light beams may be directed at an angle to each other, a semitransparent mirror is installed in the point of their intersection. EFFECT: operative analysis of person's health. 3 dwg
