Xylem SI Analytics TitroLine 6000 Manual De Instrucciones página 142

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Chapter 4 Method Parameters
Linear titration
If linear titration control was selected, you have to define the step size.
Fig. 92
Linear step size can be set from 0.001 to 5.000 ml.
Fig. 93
Linear step width can also be set for end-point titration (pH, mV and dead stop). In this type of titration, linear step
width is used after the first continuous titration stage.
Titration direction
The titration direction can be set to "increase" or "decrease". For instance, if you wish to perform a total acidity
titration to a pH value of 8.1 using NaOH, you have to select "increase". When titrating for the alkalinity ("m
value") to a pH value of 4.5 using HCl, you have to select "decrease".
Fig. 94
Pretitration
If the titration agent consumption is roughly known, you can set a pretitration volume on the <Pretitration>
menu. In this process, a defined volume is dosed ( = pretitrated) following the initial waiting time. After the
addition of the pretitration volume, another defined span of time is observed as the waiting time before the next
titration step is added. The pretitration volume is automatically added to the titration agent consumption. The