Patent ID: 7435320
Filing Date: 2008-10-14
Classification: C25D,G01N,H05K

Abstract:
1. An electrochemical cell for analyzing a sample electrochemical deposition solution, comprising (1) a single measurement chamber for receiving the sample electrochemical deposition solution, said measurement chamber being in fluid communication with at least one liquid inlet and at least one liquid outlet, (2) a test electrode, a counter electrode, and a reference electrode positioned in said measurement chamber for contacting the sample electrochemical deposition solution, wherein said test electrode has a longitudinal axis and is characterized by an average transverse dimension of from about 1 μm to about 250 μm, as measured along a direction that is perpendicular to said longitudinal axis, wherein said test electrode does not extend into said measurement chamber, but terminates at a flat end surface that is flush with an inner surface of the measurement chamber so that the test electrode contacts said solution when present in said measurement chamber only at said flat end surface of the test electrode, wherein the counter electrode comprises a tubular element having an inner surface and an outer surface and whose hollow center serves as a liquid pathway for the electrochemical deposition solution, wherein the tubular counter electrode forms a part of the liquid outlet and serves as the liquid pathway for the sample electrochemical deposition solution to pass therethrough, wherein said inner surface of the counter electrode constitutes the only liquid contacting surface of said counter electrode, and wherein said counter electrode maintains contact with sample electrochemical deposition solution at its inner surface and connects to external electrical connectors at its outer surface.