Metrohm tiamo 2.4 Manual User Manual

Page 851

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5 Method

tiamo 2.4

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835

Titration rate

Titration rate

The three predefined sets of parameters can be selected for the titration
rate: slow, optimal and fast; the parameters for Control are not dis-
played. The User setting must be selected in order to be able to edit these
parameters.

Selection

slow | optimal | fast | User

Default value

optimal

slow
For titrations in which the finest details are also to be visible. This could
however also lead to an increase in noise, which could result in unwan-
ted EPs.
optimal
Parameter set for all standard titrations; optimized for the most fre-
quent applications.
fast
For less critical, fast titrations.
User
User-defined settings of the individual titration parameters which affect
the titration rate.

Control

NOTE

Will be displayed only if the option User is selected in the selection list
Titration rate.

Control range

The control range is entered as distance to the endpoint. Within the con-
trol range, iodine will be generated in steps which are controlled by the
minimum rate. The larger the control range, the slower the titration.
Outside the control range, iodine will be generated continuously with
Maximum rate.

The standard control parameters are optimal for most applications and
should not be modified. If you nevertheless need to modify the control
parameters for special reagents and/or samples take care that the polari-
zation current of the indicator electrode (I(pol)), the endpoint and the
control range are linked to each other.

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