28.7 Dosing and Liquid Handling
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270
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917 Coulometer
determination is started there is a check whether the solution is contained
in the list.
For buret units with integrated data chip, a check is made in the method
run to verify whether the correct titrant has been attached and whether
the type of dosing drive matches. For buret units without an integrated
data chip, the cylinder volume and the type of dosing drive are checked.
For the selected titrant, the validity of the titer, the working life of the
titrant and the time interval for the GLP test of the buret unit are checked
at the start of the determination.
Selection Selection of configured titrants | not defined
Default value not defined
not defined
No check takes place.
Tandem dosing
A second dosing device can be defined under [Tandem dosing] in order
to enable uninterrupted dosing. Dosing is carried out with a combination
of two dosing devices so that the second dosing device is dosing while
the first one is being filled and vice versa.
Dosing device
Selection of the MSB connector to which the dosing device is connected.
The selection does not depend on the number of MSB connectors of the
control instrument.
Selection 1 | 2 | 3 | 4 | off
Default value off
Titrant
Selection of the titrant from the titrant list. We recommend always select-
ing the titrant. Titrants are defined under System â–¶ Titrants. You can
also enter a name which is not contained in the titrant list. When a deter-
mination is started there is a check whether the solution is contained in
list.
For buret units with integrated data chip, a check is made in the method
run to verify whether the correct titrant has been attached and whether
the type of dosing drive matches. For buret units without integrated data
chip, the cylinder volume and the type of dosing drive are checked. For
the selected titrant, only the time interval for the GLP test of the buret unit
is checked at the start of the determination.
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