126
After the start of titration, it makes frequently sense to have the sample stirred over a defined period of time,
for instance, to allow for the sample to be dissolved. The waiting time to be observed prior to the first addition
of titration solution can be set using the <
Initial waiting time
> item. The initial waiting time can be set between
0 and 999 seconds (Fig. 95).
Fig. 95
4.6.4.2 Dynamic control
If dynamic control was selected, one has a selection of 3 different stages («
steep
», «
average
» and «
flat
»)
or «
user-defined
»
dynamic parameters(Fig. 96).
Fig. 96
On the stages, both the dynamic parameters and the minimum and maximum step sizes are defaulted
Dynamic parameters
Min./max. step size
Applications
Steep
0.02/1.0
Strong acids and alkali (HCl, NaOH, HNO
3
etc.), redox
titrations such as iron (permanganometric or cerimetric),
halogenides high concentrations
Average
0.02/1.0
Iodometric titrations, halogenides, medium-strength
acids and alkali
Flat
0.05/0.5
Weak acids and alkali, titrations involving Ca- or Cu-ISE
