| abstract |
Provided is an electrochemical measurement device for measuring a chemical substance generated or consumed by a biological sample in a solution, the device comprising a plurality of electrode surfaces; a spacer; and at least one wall plate. The electrode surfaces, the spacer, and the wall plate are disposed on the same flat surface. Each of the electrode surfaces has a diameter d el of 80 μm or less. The height of the spacer is a given value that falls within the range of h=21.8(d el +0.8)/(d el +9.7)±5 [μm]. The spacer is structured so as not to allow a three dimensional area enclosed by the biological sample, a flat surface, and the spacer, to be formed when the biological sample is in contact with the spacer. The wall plate has a property that does not allow a solute in the solution to permeate the wall plate, and has a height equal to or more than that of the spacer. Two electrode surfaces are spaced away from each other by the wall plate. |