33180000-5 Apparatus for the maintenance of physiological functions of the body (vitrally useful materials for hemodialysis) Dialysator low-voltage, effective surface area of membrane: 1,4-1,5 m2, coefficient of ultrafiltration 6-30 ml/year; Dialysator medium-voltage, effective surface area of membrane: 1,4-1,5 m2, coefficient of ultrafiltration 15-40 ml/year; Dialysator medium-voltage, effective surface area of membrane: 1,6-1,7 m2, coefficient of ultrafiltration 15-40 ml/year; Dialysator mediu