Evaluation method and evaluation system of free hypohalous acid concentration
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United States of America Patent
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Sep 9, 2003
Grant Date -
N/A
app pub date -
Jan 6, 1999
filing date -
Jan 8, 1998
priority date (Note) -
Expired
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Abstract
The present invention provides an evaluation method and an evaluation system of free halogen concentration which eliminate the necessity of early exchanging or recycling of catalysts, as compared with a conventional method or system. In the present evaluation method of free halogen concentration, a main flow path of a sample liquid for evaluation and a sub-region that communicates with the main flow path are formed, a potential-measuring electrode is installed in the main path, while a reference electrode is installed in the sub-region at a position where free halogen in the sample liquid has been decomposed. Moreover, free halogen in the sample liquid is decomposed by a free-halogen decomposing substance in the sub-region, and the free halogen concentration is evaluated from the electric potential difference between the reference electrode and the potential-measuring electrode.
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