Electroblotting for the transfer of electrophoretically separated species from a gel to a transfer membrane is performed in a semi-dry format with sheets of absorbent polyester or polyester/cellulose blend wetted with buffer solution in place of the traditional buffer-wetted filter paper. The result is effective electroblotting at a lower electric current level than that obtained with filter paper and thereby less resistance heating of the gel, the transfer membrane, and the species being transferred.