Metrohm 790 Personal IC - Manual (Page 95)

4 Operation
790 Personal IC
86
4.4 Methods
A method contains all information necessary for data acquisition, in-
tegration, peak evaluation and quantification. It can be considered
as the chromatogram template, i.e. chromatogram without raw data.
Six prepared methods are stored as
method files ( *.mtw ) in the Meth-
ods directory. These methods cannot be renamed or copied, but only
changed and saved under the same name.
Each system is linked to the method having the same name as the sys-
tem. This method is called processing method and is opened auto-
matically at the start of a new determination.
4.4.1 Method file handling
The following menu items are used for opening and saving of methods:
SYSTEM / PC icon / Open
By clicking this menu item or by double-clicking the PC icon in the sys-
tem window, the method file ( *.mtw ) belonging to the system is loaded
from the Methods directory. At the same time, an empty chromatogram
window is opened.
The name of the method is displayed in the title bar of the system win-
dow. A star ( * ) at the end of the name indicates that the method has
been changed since the last saving.
790 PERSONAL IC / File / Save / Method
Save the method of the current chromatogram in a method file ( *.mtw )
in the Methods directory.
4.4.2 Passport
790 PERSONAL IC / Method / Passport
This menu item opens the Passport window that includes a detailed tex-
tual description of the chromatographic run and consists of the follow-
ing tabs:
General General information on determination.
Sample Sample information.
Column Column information.
Eluent Eluent information.
Comment User comments on chromatogram.
Method Log GLP log with date/time stamp for method.
Data Log GLP log with date/time stamp for chromatogram.