the membrane has a viscosity property greater than about 2 g/dl, corresponding to a pre-extrusion and pre-sterilization viscosity property of greater than about 4 g/dl.
A membrane of the present invention has a viscosity property greater than about 2.75 g/dL, corresponding to pre-extrusion and pre-sterilization viscosity properties greater than about 5.5 g/dL.