Metrohm viva 1.0 Manual - Manual (Page 581)

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5 Method
viva 1.0
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5.6.5.5 DT calibration curve properties
Dialog window: Method ▶ Evaluation - Calibration ▶ Calibration
curves ▶ [Edit] ▶ Properties... ▶ Properties calibration
The calibration curve parameters for the substance selected in the table
can be edited in the Properties calibration dialog window.
Measuring command
Shows the selected measuring command.
Substance
Shows the selected substance.
Evaluation quantity
Selection of the size according to which the substance is to be evaluated.
Selection Area | Height
Default value Area
Weighting
on | off (Default value: on)
If this check box is activated, then the points on the calibration curve will
be weighted in accordance with the formula 1/evaluation quantity
².
Evaluation ratio
Evaluation ratio Q/Q(0) with which the calibration factor is calculated.
Input range 0.01 - 1.10
Default value 0.50
Evaluation parameters for standard
Curve type
Curve type for the evaluation of the calibration curve. Determines the type
according to which the calibration curve is to be fitted. A minimum num-
ber p of different effective addition volumes must exist for the standard
solution for the various curve types so that it is possible to fit this calibra-
tion curve. The minimum number p corresponds to the number of terms
in the calibration function.
Selection Linear regression | Quadratic regression | Non-
linear regression | Linear interpolation
Default value Linear regression
Evaluation start
Evaluation ratio Q/Q(0) with which the calculation of the regression for
the standards is to be started.