Metrohm 761 Compact IC User Manual
Page 135
4.4 Methods
761 Compact IC
125
Calibration curve
761 COMPACT IC / Method / Calibration / Graphs
Selecting this menu item or clicking on
<Graphs>
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
A
3
+ k
2
A
2
+ k
1
A + 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).