Endpoint drift correction for automatic titrations
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United States of America Patent
Stats
-
Jul 8, 1980
Grant Date -
N/A
app pub date -
May 30, 1978
filing date -
May 30, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method are described for automatically correcting drift in automatic titrations, such as coulometric titrations of water. An endpoint detector provides a signal indicative of the state of the titration mixture and the detector signal is monitored by two comparators, responsive to titration mixture states on opposite sides of the endpoint and connected to means for controlling forward and back titration. At the end of a titration, the titration time and amount of titrant are stored in memory elements, and circuitry including an array of gates monitors the comparator signals during two post titration time periods to determine both the direction and rate of drift, and to correct the titration results for the amount of drift detected.
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