Xylem TitroLine 7500 KF Mode D'emploi page 158

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4.6.5.4 Step size
The «step size» can be set from 0.001 to 5.000 ml (Fig. 116).
Typical values for the KF titration are 0.002 - 0.01 ml.
Fig. 116
In this type of titration, linear step width is used after the continuous titration stage.
4.6.5.5 Titration direction
The titration direction can be set to «increase» or «decrease» (Fig. 117).
Fig. 117
Example:
increase
decrease
total acidity titration to a pH value of 8.1 using NaOH
titrating for the alkalinity ("m value") to a pH value of 4.5 using HCl