Metrohm 840 PC Control 6.0 / Touch Control - Manual (Page 15)

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2 Parameters
2.1 Coulometric Karl Fischer titrations (KFC)
2.1.1 Control parameters
Under [Control parameters], the control parameters for the endpoint
are defined.
Endpoint at
Measured value for the endpoint.
Range –1250.0 ... 1250.0 mV
Default value 50.0 mV
Selection off
Titration rate
Three predefined sets of parameters can be selected for the titration rate.
Selection slow | optimal | fast | user
Default value optimal
slow
For samples with a low water content or samples which release their
moisture only slowly.
optimal
For all standard titrations. The parameters have been optimized for the
most frequent applications.
fast
For uncritical samples with high water content.
user
The individual titration parameters can be modified.
The settings of the individual titration rates are listed in table 1, page
10.
User-defined parameters
These parameters are only accessible when Titration rate = User.
Dynamics
This parameter defines the control range before the specified endpoint.
Within the control range, the iodine is generated step by step, the genera-
tion is finely controlled. The closer the endpoint, the slower the iodine is
generated until the rate defined under Min. rate is reached. The larger
the control range, the slower the titration. Outside the control range,