Metrohm viva 1.1 (ProLab) - Manual (Page 687)

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5 Method
viva 1.1 (for process analysis)
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5.6.5.6 RC 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 quantity according to which the substance is to be evalu-
ated.
Selection Area | Height
Default value Area
Area
For the measured quantity Current, the area is converted to the corre-
sponding charge.
Height
For the measured quantity Current, the height corresponds to the cur-
rent.
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 concentrations must exist for the various curve types so
that it is possible to fit this calibration curve. The minimum number p cor-
responds to the number of terms in the calibration function.
Selection Linear regression | Quadratic regression | Non-
linear regression | Linear interpolation
Default value Linear regression
Selected curve type Calibration function p
Linear regression y = CALC 0 + CALC 1 ⋅
x
≥ 2
Quadratic regres-
sion y = CALC 0 + CALC 1 ⋅
x + CALC 2 ⋅ x 2
≥ 3