×

Electrochemical cell

  • US 6,863,801 B2
  • Filed: 04/23/2001
  • Issued: 03/08/2005
  • Est. Priority Date: 11/16/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for determining a concentration of a reduced form or an oxidized form of a redox species in a liquid sample, the apparatus comprising:

  • (a) a hollow electrochemical cell having a working electrode and a counter or counter/reference electrode wherein the working electrode is spaced from the counter or counter/reference electrode by less than 500 μ

    m;

    (b) means for applying an electric potential difference between the electrode; and

    (c) means for electrochemically determining the concentration of the reduced form or the oxidized form of the redox species in the liquid sample comprising;

    (i) means for determining a change in current with time after application of the electric potential difference and prior to achievement of a steady state current;

    (ii) means for estimating a magnitude of the steady state current; and

    (e) means for obtaining from the change in current with time and the magnitude of the steady state current, a value indicative of the concentration of the reduced form or the oxidized form the redox species.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×