Hanna Instruments HI 901 - Manual (Page 88)

6-4
TITRATION MODE
The S-shaped curve and the derivative curve are scaled to fit simultaneously inside the display.
Also, when the titration is normally terminated (end point detected successfully), the end
point volume value marked with a cross is displayed on the graph.
The contents of the graph as related to an end point type, is as follows:
Equivalence End Point (pH) - the pH curve and the selected derivative vs volume is displayed.
(see Figure 1)
Equivalence End Point (mV) - the mV curve and the selected derivative vs volume is displayed.
(see Figure 2)
Fixed End Point (pH) - only the pH vs volume curve is displayed. (see Figure 3)
Fixed End Point (mV) - only the mV vs volume curve is displayed. (see Figure 4)
Figure 1 Figure 2
Figure 3 Figure 4
- allows you to view on the ordinate axis a plot of either the mV (or pH) values or
the selected derivatives values (of mV or pH). Available only for titrations with
equivalence end points.