Metrohm 840 PC Control 5.0 / Touch Control - Manual (Page 54)

3.8 Titrants
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PC Control / Touch Control
mean value of the determinations has been saved as the titer (see
Section 4.5.1).
You can monitor the time interval after which the titrants titer must be
redetermined.
Open the dialog Titer options/Validity and activate the
checkbox for Monitoring.
Enter either the time interval for the validity of the titer or the
date for the next titer determination. When either the time
interval or the date is edited the other value will be updated
automatically.
Select an Action to be carried out when the time interval has
expired. If the titrant is used in the current method then the time
interval will be checked at each START of a determination.
When the monitoring interval has expired one of the following actions
can be selected and carried out:
• Display message: a message is shown. You can choose whether
you want to continue with the determination or cancel the run. If you
carry out the run then the fact that the monitoring interval had
expired when the determination was carried out will be documented
in the determination data. The message can be viewed under
Results/More determination data/Messages (see
Section 3.18.2).