Abstract: A hollow-fiber membrane. The hollow-fiber membrane is made from a polymeric blend comprising an aromatic sulfone polymer and polyoxazoline; wherein the hollow-fiber membrane comprises an inner surface facing towards its lumen, an outer surface facing outwards and an intermediate wall having a wall thickness; wherein the hollow-fiber membrane is an integrally asymmetric, permeable hollow-fiber membrane.

Abstract: A hand tool of generally known kind and having a reciprocable ram mounted in a tool frame which defines a guideway for a connector extending transversely of the ram path. The ram has a wire pusher adapted to push a wire into a contact in the connector and the connector is stepped across the ram path so that on successive ram strokes wires can be inserted into respective contacts. Reversible indexing structure is provided comprising an index wheel (33) driven on withdrawal of the tool ram through a lost motion coupling (34) and a fork arm (54). The wheel (33) engages pitch pins (10) and precise indexing is controlled by a register pin (38) on a spring lever (39). A moveable slide (49) selectively engages the fork with opposite sides of wheel (33) to effect indexing in opposite senses.