Patent ID: 8282803

Claim:
Apparatus for isoelectric focusing in a plurality of gel strips, said apparatus comprising: a frame with a plurality of electrodes mounted thereto, each electrode terminating in an inner electrode end having upper and lower surfaces both of which comprise exposed electrode material; and a tray having a plurality of troughs, each said trough having a floor, said troughs sized and spaced to receive one gel strip per trough and one inner electrode end lying either above or below said gel strip; wherein when said inner electrode ends are received within said troughs, said inner electrode end of each of said electrodes is variable in height between a zero height in which said inner electrode end directly contacts said floor while allowing a gel strip to rest on said upper surface and a finite height in which said lower surface is raised above said floor by a distance sufficient to receive a gel strip with said lower surface contacting an upper side of said gel strip.