Patent ID: 7740747
Filing Date: 2010-06-22
Classification: G01N

Abstract:
1. A microchip for capillary electrophoresis, the microchip comprising: a separation channel comprising a first end and a second end, said second end being adapted to deliver an electrical potential; an injection channel comprising a first end and configured to receive a sample through a sample well disposed on the first end of the separation channel, said first end being adapted to deliver an electrical potential; wherein the injection channel and the separation channel intersect to form a ‘T’ junction; wherein a sieving matrix occupies a region after the ‘T’ junction; a first valve disposed adjacent to the ‘T’ junction and on the separation channel between the ‘T’ junction and the first end of the separation channel and adapted to deliver an electrical potential; and a second valve disposed at the ‘T’ junction; wherein the second valve is a two-way valve; said valve being adapted to be positioned to either preclude flow between said first end of said separation channel and said second end of said separation channel or to preclude flow between said injection channel and said separation channel and to deliver an electric potential.