| abstract |
A blood purification membrane having a membrane thickness of 10 to 35 µm, an inner diameter of 100 to 300 µm, a porosity of 50 to 85%, a water permeability (ultrafiltration rate) at 37°C of not less than 20 ml/m2HrmmHg and a sieving coefficient of albumin of not more than 0.01, a substantially homogeneous interior structure, and a smooth surface structure. A process for producing the membrane and a module are also provided. |