A versatile apparatus for electrophoresis including isoelectrofocusing and its performances.

A new versatile electrophoresis apparatus with a circulating cooling plate for analytical, preparative, and two-dimensional electrophoresis, including isoelectrofocusing, was designed and constructed. The apparatus consists of six main separable blocks and two removable bar electrodes. Each block in the apparatus usually has more than two roles and can easily be assembled with paper clips. Various combinations of the blocks and electrodes enable one to assemble not only an apparatus for horizontal (flat-bed), vertical slab, disc gel, and preparative electrophoresis, but also preparative isoelectrofocusing.