Metrohm 790 Personal IC - Manual (Page 118)

4.4 Methods
790 Personal IC
109
Calibration points table
This table contains the basic information used to construct the calibra-
tion curve:
Level Number of Calibration level .
Conc. Concentration of the current component in the
calibration sample. It is taken from the concen-
tration table.
Area (or Height) Peak height or area of the current component,
depending on calibration base.
File File name of calibration chromatogram that
stores data on the given calibration level.
Used Information whether the calibration level is used
for calculation of the calibration curve or not.
Exclude the selected calibration point from the
list and recalculate calibration coefficients for
the current component. Repeated pressing in-
cludes the point again. You can exclude points
that drop out of the calibration curve watching
for RSD values.
Component information
Component Allows to select the current component from
the list. It is possible also to scroll the list of
components by mouse, using the special arrow
buttons on the right.
Retention time Retention time of the selected component
(read-only).
Concentration Concentration of the selected component
(read-only).
Calibration parameters
Calibration method
Method that is used for calibration procedure.
There are three basic methods of calibration:
External standard calibration
Absolute calibration. It is the basic calibration
procedure in ion chromatography.
Internal standard calibration
Relative calibration.
Tabulated calibration Relative response factor calibration. It is a sim-
plified method of external standard calibration.
Local If this checkbox is marked then the correspond-
ing parameter is valid for the current compo-
nent only. Otherwise, this parameter is global
(i.e. default for all other components).