Analytikjena Model S2 produces 30x40cm gel fits standard x-ray film. The fundamental aluminum plate distributes heat minimizing smiling (band curvation). The lower removable buffer tray has its own chamber to collect the upper reservoir buffer, so there is no need for the apparatus to be moved in order to dispose of the buffer. The gel’s held in place with built in clamping system. The exclusive gasket system assures operation is free from leaks and there’s not need for notched plates and/or grease. Comes with interlocking lids. Apparatus components and extra combs can be ordered separately.