Patent ID: 7906340

Claim:
A method for determining the concentration of hydrogen peroxide in a solution, comprising the steps of: measuring a fixed volume of the solution; diluting said fixed volume of the solution with an electrolyte solution; measuring a fixed volume of the diluted solution; depositing said fixed volume of the diluted solution into a titration cell containing a reference electrode and a working electrode; connecting the reference electrode and working electrode to a voltmeter; introducing a titrant into the titration cell at a fixed rate of volume; stirring the titrant and the fixed volume of the diluted solution as the titrant is introduced into the titration cell; measuring the cell potential of the titration cell across the reference electrode and working electrode; periodically performing a calculation of the differential in cell potential expressed as dE/dV, where E is the cell potential and V is the volume of titrant introduced; stopping the introduction of titrant into the titration cell when the differential in cell potential abruptly changes; and calculating the concentration of hydrogen peroxide in the fixed volume of the solution based on the volume of titrant that was introduced into the titration cell.