Patent ID: 7767071
Filing Date: 2010-08-03
Classification: G01N

Abstract:
1. A system for detecting and displaying two-dimensional images of electrophoretic separations of constituents of a substance in a gel said constituents being capable of changing the electrical impedance within said gel, comprising: a computer, a gel having first and second sides, a first insulating plate fitted with a first plurality of parallel, linear electrodes adjacent said first side of said gel, a second insulating plate fitted with a second plurality of parallel, linear electrodes adjacent said second side of said gel, said first plurality of linear electrodes adjacent said first side of said gel being oriented orthogonally with respect to said second plurality linear electrodes adjacent said first side of said gel so that at least one of said electrodes adjacent said second side of said gel overlaps at least one of said electrodes adjacent said second side of said gel, said first and said second insulating plates being fixed in position relative to one-another during use and separable at other times, a voltage source arranged to be connectable sequentially and capable of applying a voltage to first plurality of parallel, linear electrodes adjacent said first side of said gel, an amplifier arranged to be connectable sequentially to second plurality of parallel, linear electrodes adjacent said second side of said gel and capable of sensing changes in electrical impedance at a location where said first and second plurality of electrodes overlap and reporting said changes to said computer, whereby said changes in electrical impedance can be recorded and displayed by said computer.