Metrohm 899 Coulometer - Manual (Page 107)

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10 Appendix
899 Coulometer
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10.5 Method examples for working with the Karl Fischer
oven
You will find the recommended parameter settings for working with a Karl
Fischer oven in the following table. The methods can be used either with a
sample changer with oven module (e.g. 885 Compact Oven SC) or with a
Karl Fischer oven (e.g. 860 KF Thermoprep). The table contains only para-
meter settings that differ from the default values.
Parameters Blank value
determination
(method tem-
plate Blank) Water content
determination
(method tem-
plate KFC-Blank)
>Conditioning
Start drift 10 µg/min *) 10 µg/min *)
Stabilizing time 30 s 30 s
>Start conditions
Request sample size off off
Hold at request off off
>Titration parameters
Extraction time 180 s 180 s
Stirring rate 12 12
>Statistics
Statistics on –
Number of determina-
tions 3 –
>Reports
Results on on
Calculations/Statistics on –
*) If you work in an environment with high humidity, then we recommend
that the parameter Start drift be set to 20 µg/min.