Baxter Meridian Hemodialysis Instrument, product code 5M5576 and 5M5576R; Baxter Healthcare Corporation, McGaw Park, IL 60085 || The instrument is part of a high permeability hemodialysis system which consists of a controlled dialysate delivery system that incorporates an ultrafiltration controller to prevent excessive loss of water from the patient''s blood, an extracorporeal blood set, and a high permeability dialyzer. The standard features of the Meridian instrument incluide a high blood flow rate capacity (for shortened hemodialysis treatment time), automatic ultrafiltration control, standard and variable bicarbonate and sodium capabilities anbd automated chemical disinfection. The Meridian will operate in either the bicarbonate or acetate mode for concentrates.