Metrohm 790 Personal IC - Manual (Page 117)

4 Operation
790 Personal IC
108
Calibration curve
790 PERSONAL IC / Method / Calibration / Graphs
Selecting this menu item or clicking on in the component ta-
ble opens the Component window.
In this window the results of the calibration are shown for each compo-
nent 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
xxxxA 3 + k
2
xxxxA 2 + k
1
xxxxA + 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 approxi-
mation.
Corr. Correlation coefficient value is available only in
the case of linear calibrations without weighting
of data points.
Calibration curve Plot of measured calibration points and calcu-
lated calibration curve.
k0, k1, k2, k3 Calibration coefficients k
0
, k
1
, k
2
and k
3
(coeffi-
cients of the calibration formula).