Polysulfone permselective hollow fiber membrane bundle and a manufacturing method thereof and a blood purifier

A high stability of safety and performance, particularly in the manufacture and polysulfone permselective hollow fiber membrane bundle which is suitable for hemodialysis hollow fiber blood purifier or the like having a high water permeability for use in the treatment of chronic renal failure to provide a method and long term storage stability with high blood purifier. In A polysulfone hollow fiber membrane bundle containing the polyvinylpyrrolidone, the hollow fiber elution of polyvinylpyrrolidone in less than 10ppm from membrane bundle, and polysulfone permselective hollow dissolution of hydrogen peroxide is 5ppm or less a yarn membrane bundle. Further, a method of manufacturing a polysulfone permselective hollow fiber membrane bundle to the polyvinyl pyrrolidone hydrogen peroxide content is 300ppm or less as a raw material. Moreover, it is said the method of manufacturing a polysulfone permselective hollow fiber membrane bundle, characterized in that the drying of the hollow fiber membrane bundle is dried using microwave radiation under reduced pressure. .BACKGROUND