Fig. 2

PVP concentrations of the filling solutions of several dialyzers measured by Müller’s method. Symbols closed square and open square denote the blood and dialysate sides, respectively. The PVP concentrations were measured by Müller’s method. In regard to the materials constituting the dialysis membranes, PSf, PEPA, and PMMA denote polysulfone, polyester polymer alloy, and polymethylmethacrylate, respectively. AC and gamma-ray indicate the sterilization method using an autoclave and gamma-ray irradiation, respectively