Patent ID: 7638035

Claim:
An electrode plate for electrochemical measurements comprising: a substrate made of an insulator, an upper layer made of an insulator provided on an upper face of the substrate, and a lower layer made of an insulator provided on a lower face of the substrate, wherein: the substrate comprises a plurality of oxidation electrodes sandwiched between the upper face of the substrate and the upper layer, and a plurality of reduction electrodes sandwiched between the lower face of the substrate and the lower layer; the upper layer comprises a plurality of upper layer openings; each of the oxidation electrodes is exposed from each of the upper layer openings; the lower layer comprises a plurality of lower layer openings; each of the reduction electrodes is exposed from each of the lower layer openings; the substrate is provided with a plurality of through-holes that penetrate from an upper face of each of the oxidation electrodes to a lower face of each of the reduction electrodes; each of the upper layer openings has the same area with an area of each of the lower layer openings; each of the upper layer openings has an area of equal to or less than 10,000 μm 2 , and each of the lower layer openings has an area of equal to or less than 10,000 μm 2 .