Patent ID: 7842246

Claim:
A multi-well plate comprising a plate top having plate top openings and a plate bottom mated to said plate top to define wells of said multi-well plate, said plate bottom comprising a substrate having a top surface with electrodes patterned thereon and a bottom surface with electrical contacts patterned thereon, wherein said electrodes and contacts are patterned to define two or more independently addressable sectors of two or more jointly addressable assay wells, each sector comprising two or more wells with: (a) jointly addressable working electrodes on said top surface of said substrate, wherein each of said working electrodes is electrically connected with each other and connected to at least a first of said electrical contacts; and (b) jointly addressable counter electrodes on said top surface of said substrate, wherein each of said counter electrodes is electrically connected with each other, but not with said working electrodes, and connected to at least a second of said electrical contacts.