Metrohm IC Net 2.0 - Manual (Page 135)

7.5 Calibration and quantification
IC Net 2.0 127
7.5.7 Calibration curve
IC NET / Method / Calibration / Graphs
Selecting this menu item or clicking on <Graphs> in the compo-
nent table opens the
Component
window.
In this window the results of the calibration are shown for each
component together with the calibration curve. The parameters
for calculating the calibration curve can also be entered here.
Calibration results and curve
Analytical expression A line above the calibration curve looking
like Q = = k
3
žžA 3
+ k
2
žžA 2
+ k
1
žžA + k
0
.
This formula is used for approximation of
the calibration curve.
RSD RSD (Residual Standard Deviation) value to
evaluate the error of calibration curve ap-
proximation.
Corr. Correlation coefficient value is available
only in the case of linear calibrations with-
out weighting of data points.
Calibration curve Plot of measured calibration points and
calculated calibration curve.
k0, k1, k2, k3 Calibration coefficients k
0
, k
1
, k
2
and k
3
(coefficients of the calibration formula).