Process for electrophoresis

In an electrophoretic process for the investigation, analysis, and/or production of chemical substances, in which the substances to be investigated or the starting materials for the substances to be produced are transported in aqueous solution in a gel carrier medium for inhibiting or stabilizing convective transport under the action of an electric field wherein the aqueous solution contains reagents which form precipitates with the substances to be quantitatively determined, and, due to electrophoretic transport in the aqueous phase of the carrier medium, these reagents result in the production of precipitation over a migration distance which is proportional in length to the amount of the substances being determined;

• and in which process the electrophoretic transport is carried out in a vertical carrier medium which is in the form of a thin layer held between at least two plate-like or film-like elements which are moveable with respect to each other, such that the opposite ends of the carrier medium are in direct contact with buffer solution contained in respective electrode containers associated with each of the ends, and such that after the electrophoretic transport one of the side surfaces of the carrier medium, which medium is in the form of a thin layer, is exposed by the removal of at least one of the plate-like or film-like elements, the improvement wherein the electrophoretic transport is carried out in a carrier medium in the form of a thin layer which is divided into multiple essentially parallel strips.