▎ 摘　　要

NOVELTY - The well plate (1A) has a synthetic resin material and a base material (2) which transforms into a three dimensional shape from a flat two dimensional shape. An electroconductive pattern (3) is positioned on the base material. An electrode (4) is formed succeeding one end of the electroconductive pattern. An external connection terminal (5) is provided for electrically connecting the external element which is electrically joined to the electroconductive pattern and provided in the exterior of the base material. The electrode is formed to form a portion of the base material which is shaped into the three-dimensional shape in the thickness direction of the base material and a recess is provided for holding the liquid in contact with the electrode. A resin layer is formed to be integrated with the material and covers the base material. USE - Well plate for measuring electrophysiological data of liquid accommodated in recessed portion. ADVANTAGE - The well plate is economical, and suppresses the elution of material component from constituent material. The change of voltage in the liquid accommodated in the recessed portion is stably measured. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional schematic diagram of a well plate. (Drawing includes non-English language text) Well plate (1A) Base material (2) Electroconductive pattern (3) Electrode (4) External connection terminal (5)