Metrohm 840 PC Control 5.0 / Touch Control - Manual (Page 53)

3 Operation
PC Control / Touch Control
41
Enter an unambiguous titrant name under Titrant or select a name
from the selection list.
Enter the Concentration of the titrant and its units.
The titrant concentration can be calculated as the variable CONC in the
result calculations (see Section 4.5.1). This is done by selecting a titrant
in the titration command for the method (see Section 4.1.5). In a
following calculation command you can calculate the concentration of
this titrant.
You can add a Comment to each titrant.
Normally the Titer is determined automatically and assigned. To do
this you must draw up a method for the titer determination (see
Section 3.15.2 and Section 3.16) and select a titrant in the titration
command (see Section 4.1.5). In a following calculation command you
can assign the variable TITER to this titrant (see Section 4.5.1).
Alternatively you can enter the value for the titer manually. If you alter
the titer or the concentration of a titrant in a loaded determination at a
later date and would then like to recalculate the determination with the
corrected value then you must alter the value in the determination data
under View data/Titrant data (see Section 3.18.1).
You can also enter a unit for the titer. This unit is not taken into
account in the calculations.
The date and time of the titer determination are entered
automatically on assignment or entry of the titer. If a new titrant is
entered then the entry date will be given as the date of the titer
determination.
3.8.4 Titer determination options and data
Detailed information about the titer determination is shown under
Titrants/Edit/Titer options. Under Titer method the method with
which the titer was determined is shown. If the titer has been entered
manually then manual will be shown. The user who was logged in when
the titer was assigned or entered manually is shown under User.
For automatically assigned titers the number of titer determinations is
shown together with the absolute and relative standard deviation if the