Patent ID: 7371561

Claim:
A multiple electrode pair array apparatus for use with a separate multiple well plate having multiple nonconductive wells distributed in a two-dimensional matrix array having R rows and C columns, wherein the nonconductive wells are separated by walls having a wall thickness, comprising: a non-conductive base member, an array of pairs of electrodes attached to said base member and projecting therefrom, wherein said pairs of electrodes are distributed on said base member in a two-dimensional matrix array having R rows and C columns to enable registration with the separate two-dimensional matrix array of nonconductive wells and registration with the nonconductive walls having a wall thickness, wherein each pair of electrodes includes a respective first electrode and a respective second electrode, an array of R row conductors attached to said non-conductive base member, wherein each row conductor is electrically connected to corresponding first electrodes in a corresponding row of first electrodes, and an array of C column conductors attached to said non-conductive base member, wherein said C column conductors are perpendicular to said R row conductors, wherein each column conductor is electrically insulated from said row conductors, wherein each column conductor is electrically connected to corresponding second electrodes in a corresponding column of second electrodes, wherein an adjacent electrode pair spacing gap, which is substantially equal to the nonconductive wall thickness of the multiple nonconductive wells, is provided between a first electrode on one pair of electrodes and second electrode on an adjacent pair of electrodes, such that an inside wall of the multiple well plate is received in said adjacent electrode pair spacing gap with a friction fit.