Chemistry: analytical and immunological testing – Including titration or ph determination
Reexamination Certificate
2011-03-15
2011-03-15
Gordon, Brian R (Department: 1773)
Chemistry: analytical and immunological testing
Including titration or ph determination
C436S135000, C436S806000
Reexamination Certificate
active
07906340
ABSTRACT:
An electrochemical potentiometric titration method that entails titration of a known volume of a catholyte containing an unknown amount of hydrogen peroxide in a titration cell having two electrodes, a platinum working electrode and a silver/silver chloride reference electrode. A known concentration of a titrant is added to the catholyte in the titration cell. Simultaneously, as the titrant is added the potential between the working electrode and the reference electrode is monitored. The point at which all of the hydrogen peroxide has been consumed is signaled when the cell potential changes abruptly. Since the concentration of the titrant is already known, the amount of titrant added (concentration multiplied by volume) is directly related to the amount of hydrogen peroxide consumed. The concentration of hydrogen peroxide is calculated from the volume of catholyte and the moles of hydrogen peroxide.
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Bessette Russell R.
Patrissi Charles J.
Gordon Brian R
Kasischke James M.
Nasser Jean-Paul A.
Stanley Michael P.
The United States of America as represented by the Secretary of
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