Chemistry: analytical and immunological testing – Including titration or ph determination
Reexamination Certificate
2010-12-29
2011-12-13
Kim, Vickie (Department: 1777)
Chemistry: analytical and immunological testing
Including titration or ph determination
C436S164000, C422S082050, C422S082090
Reexamination Certificate
active
08076153
ABSTRACT:
Systems and methods are described for measuring pH of low alkalinity samples. The present invention provides a sensor array comprising a plurality of pH indicators, each indicator having a different indicator concentration. A calibration function is generated by applying the sensor array to a sample solution having a known pH such that pH responses from each indicator are simultaneously recorded versus indicator concentration for each indicator. Once calibrated, the sensor array is applied to low alkalinity samples having unknown pH. Results from each pH indicator are then compared to the calibration function, and fitting functions are extrapolated to obtain the actual pH of the low alkalinity sample.
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Chen Bingzhi
Cui WeiYi
Xiao Caibin
Zhang Li
General Electric Company
Gionta Allison M
Kim Vickie
Wegman Hessler & Vanderburg
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