PURPOSE: To enable to continuously measure the amount of hydrogen peroxide quickly with good accuracy, by immersing the detector for oxygen and corrected oxygen in the solution to be measured.
CONSTITUTION: The dissolved oxygen in the solution to be measured at the oxygen detector 1, current value based on the decomposition of hydrogen peroxide (output signal), and current value (output signal) based only on the dissolved oxygen in the solution to be measured at the corrected oxygen detector 2 are input to the operational circuit 3 and the output signals are subtracted with each other. The signal of only the amount of hydrogen peroxide in the measured solution is picked up from the operational circuit 3 and is displayed on the display unit 4.
SATOU YUUICHI
OKAMOTO MASAYOSHI
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