Abstract: The present invention relates to a free flow electrophoresis microchip for the electrophoretic separation of charged components, a free flow electrophoresis separation system incorporating the same, and a free flow electrophoresis method of separating charged components, the microchip comprising: a separation chamber in which charged components are in use separated; a plurality of separation medium inlet channels having outlets fluidly connected to one, inlet side of the separation chamber through which flows of a separation medium are in use introduced into the separation chamber such as to develop a laminar flow having a flow direction through the separation chamber; a sample inlet channel having an outlet fluidly connected to the inlet side of the separation chamber through which a flow of a sample containing charged components is in use introduced into the separation chamber; a plurality of outlet channels having inlets fluidly connected to another, outlet side of the separation chamber opposite the inlet

Abstract: A capillary electrophoresis microchip (1) including at least one capillary electrophoresis separation unit (3), a capillary electrophoresis system incorporating the same, and a capillary electrophoresis separation method, each separation unit comprising: a separation channel (5) in which analytes of a sample plug are in use separated, wherein the separation channel has a first width; and a sample channel (9) fluidly connected to the separation channel through which a sample plug is in use introduced into the separation channel, wherein the sample channel has a second width which is smaller than the first width of the separation channel at least at intersection of the sample channel (9) and the separation channel (5).