Metrohm viva 1.0 (process analysis) - Manual (Page 603)

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5 Method
viva 1.0 (for Process analysis)
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Curve type for sample
Curve type for the evaluation of the calibration curve.
Begin of evaluation sample
Evaluation ratio Q/Q(0) with which the calculation of the regression for
the samples is to be started.
Edit menu
Properties... Opens the Properties calibration dialog window in order to edit the data of
the highlighted line.
Apply settings for all
substances
The settings of the highlighted line are adopted for all substances.
5.6.5.4 MLAT 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.
Curve type
Only the Linear regression curve type is permitted for the MLAT cali-
bration method. At least two calibration points of different concentrations
are required for determining the line.
Selection Linear regression | Quadratic regression | Non-
linear regression | Linear interpolation
Default value Linear regression