Abstract: The method for electrophoretic transport of at least one solute from a first solvent stream to a second solvent stream utilizes an apparatus having a housing, a pair of electrodes positioned with the housing, each electrode being positioned adjacent one of a pair of opposite ends of the housing and each being surrounded by a device to provide a flow of a buffer around the electrode, a first inlet device through which the first solvent stream is introduced into the housing and an associated outlet device, a second inlet device through which the second solvent stream is fed into the housing and an associated outlet device, a plurality of electrophoretic membranes extending in substantially parallel, space apart, array transversely of the housing and between the electrodes, the membranes being structured to define a first solvent path for the first solvent stream and a separate second solvent path for the second solvent stream.

Abstract: An apparatus and method of determining the end point of a chemical reaction producing an optical change in a plurality of samples is disclosed. The invention is particularly suitable for the simultaneous determination of the coagulation time for multiple samples of blood and like materials.