Igen, Inc.

Lee O Hall

Glenn D Zoski

Surendera K Tyagi

Jonathan K Leland

Ralph A Kamin

A method and apparatus for triggering and measuring electrochemiluminescent phenomena using a voltage waveform applied at the voltammetric working electrode which improves the precision and accuracy of measurements. This waveform has a decreasing scan rate in the range of voltages for which electrochemiluminescence is triggered and is substantially sinusoidal in shape in this range. The waveform results from locating the reference electrode of a potentiostat in close potential proximity to its counter electrode, and applying a uniform scanning voltage waveform at the reference electrode. The waveform also can be synthesized digitally, converted to analog form, and applied directly to the working electrode with the reference electrode in close potential proximity to the working electrode.

Method and apparatus for conducting electrochemiluminescent measurements

A method and apparatus for conducting electrochemiluminescence (ECL) measurements which control the initial conditions relating to the surface state of a triggering working electrode by reproducibly creating and maintaining a favorable surface condition so as to enhance the precision and detection limit of the measurements. Assays are performed with ECL detection in a flow-through cell environment and the precision and detection limit are enhanced by alternating initialization and measurement steps.

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Gaithersburg, MD, United States of America

Lee O Hall