The electroblotting module includes four inter-locking cassettes and eight fibre pads. A high intensity current is generated by coiled platinum electrodes. These, in conjunction with the advanced cooling features, allow rapid electroblotting in just 1-2 hours. Complete stand-alone units for electroblotting formats, comprise RigRunner tank and lid, electroblotting module, cassettes and fibre pads. Modules are interchangeable with RigRunner slab and tube gel modules. Hinged rigid cassettes allow rapid set up and convenience and ensure even contact between the gel and membrane is maintained.