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Hanna Instruments HI931 - Page 71

Hanna Instruments HI931
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5-13
TITRATION METHODS
End Point Determination:
Option: 1st derivative or 2nd derivative
The equivalence point detection algorithm requires three additional titrant doses to be dispensed after the equivalence point is
reached.
The reported end point volume is a calculated value based on a number of points around the equivalence point.
The potentiometric titration curve is the response in mV potential or pH between the indication of the electrode versus the volume of
titrant added.
The inflection point of the titration curve is assumed to be the equivalence point of the chemical reaction.
For non-symmetric titration curves, the theoretical error can be reduced by using the dynamic dosing.

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