Chemistry: analytical and immunological testing – Condition responsive control
Patent
1985-01-22
1987-07-14
Richman, Barry S.
Chemistry: analytical and immunological testing
Condition responsive control
422 13, 422 62, 422 81, 422 93, 436 50, 436 52, 436129, 436135, 436158, G01N 2178, G01N 2185, G01N 3508, G05D 2100
Patent
active
046802711
ABSTRACT:
A continuous process and apparatus for the analysis of a sample containing a peroxycompound in the presence of hydrogen peroxide using known colorimetric techniques, characterized in that a sample is taken continuously, is continuously mixed with a colorimetric reagent and is divided into two streams, and continuous differential colorimetric analysis of the two streams is effected to provided a differential signal, further characterized in that one such stream is heated to such a temperature that the peroxycompound reacts with the colorimetric reagent prior to effecting the differential colorimetric analysis, whereby the differential signal is a measure of the concentration of such peroxycompound. The process and apparatus may be modified in that a third stream is taken not containing any colorimetric reagent, and two differential colorimetric analyses are effected, whereby a further signal is obtained which is a measure of the concentration of the hydrogen peroxide. A control process using a differential signal produced by the process or apparatus may be used to control the addition of peroxycompound to the body from which the sample is taken.
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Delahunty C. M.
Interox Chemicals Limited
Richman Barry S.
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