We have calculated the removal ratio in the pre-serum and post-serum during the hemodialysis of H. D. patients using a high speed gel-chromatography on twelve different diarlyzers.
The total removal ratio i n G 2000 S. W. cuprophane membrane shows results that are quite efficient, most especially in U F -2, On the other hand, G 3000 S. W. PAN membrane shows the best removal ratio. There is a difference between G 2000 S. W. and G 3000 S. W. in that the latter can only detect M. W. below 20000 whereas the former can detect M. W. both above and below 20000.
So we are able to suspect the various results depend on the thickness of the membrane.
