BUCHI DuMaster D-480 - Manual (Page 122)

Operation Manual D-480 ©BÜCH Labortechnik AG
7 - Using the instrument 122
 Click Close to close the dialog.
Required substances
Different amino acids like e.g. aspartic acid, glutamic acid or uric acid have been proven to be
advantageous.
Theoretical element contents of standard substances
The following tables lists the theoretical nitrogen contents of the standard substances used in the
calibration tables:
Standard substance N
theor
[%]
Aspartic acid 10.52
Glutamic acid 9.52
Uric acid 33.33
Defining standard substances as factor and monitor samples
Background
Factor samples are required for routine measuring work. Monitor samples are required for standard
tolerance monitoring. In order to compute factor and monitor samples correctly and to display them
with their computed element contents in the sample view, it is necessary to define the standard
substances as factor and monitor samples.
Defining standard substances as factor and monitor samples
Proceed as follows:
 Open the "Standard samples display" dialog in the operating software by selecting Math. >
Standard samples.
 Select the option "Show as measuring sample (measured concentration)".
 Click OK. This closes the dialog and saves the settings.
Defining standard substances as calibration samples
Background
These operating instructions contain specific rules for the calibration. If you want to use these rules,
you must define the standard substances used there as calibration samples. Of course, you can also
use different substances but then you must develop the calibration rule yourself.
Defined calibration samples are displayed along with their theoretical contents in the sample view.
Defining standard substances as calibration samples
Proceed as follows:
 Open the "Standard samples display" dialog in the operating software by selecting Math. >
Standard samples.
 Select the option "Show as calibration sample (theoretical concentration)".
 Click OK. This closes the dialog and saves your settings.