BUCHI DuMaster D-480 - Manual (Page 176)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 176
Viewing list of defined factor, monitor and standard samples
Viewing the list
Proceed as follows:
 Open the "Standard samples" dialog in the operating software by selecting Options > Settings >
Standards.
 The list box displays all currently defined standards. By checking the requested standard sample
the settings are displayed in the right area of the dialog.
Defining standard substances
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.
Required substances
The instrument needs standard substances which represent the sample matrix to be measured.
By means of the dialog opened by Options > Settings > Standards you can define and/or edit the
standard substances.
Defining custom standard substances
Proceed as follows:
 Open the "Standard samples" dialog in the operating software by selecting Options > Settings >
Standards.
 Click New. The input boxes on the right area are now empty. Enter the data of the standard
sample to be newly defined.
 For the substance, enter...
 ... the name of the substance in the "name" field.
 ... the theoretical element content in percent in the "Conc. [%]" fields (or in ppm in the
"Conc. [ppm]" fields respectively). If you enter 0 for the theoretical element content of a
substance element, the element is ignored in the calculation.
 ... the permissible tolerance for each element in the "Tolerance [%]" fields (usually 5%).
 Click Create. Your new standard sample will now be included in the list in the left area of the
dialog.
 You have now defined the standard substance.
 Click Close to close the dialog.