Hach-Lange TITRALAB 840_845 Reference Manual - Manual (Page 62)

Titra Lab ® TitraLab 840 and 845 Reference Manual
Page 62
Continuous IP
method For this type of method, the titration is carried out using continuous
addition of titrant.
The titrant addition speed is regulated between two user selectable
limits (Min. speed and Max. speed). The addition speed decreases
when the slope of the E or pH = f(Volume) titration curve increases
and vice versa. This prevents overshooting the equivalent point.
Figure 11: Continuous IP - Titrant addition speed
Using a Continuous IP method, higher the slope of the titration curve
is, higher the number of measurements saved will be. A great majority
of points are saved close to the inflection point. This allows an accu-
rate determination of the equivalent point.
Figure 12: Continuous IP - Number of points saved
The Continuous IP method can be stopped after a given number
(1 to 4) of equivalent points has been detected.
Speed
Volume
V max
V min
E or pH
E or pH