More Information: Linear, Rational and Quadratic Equations

The following equations are used when selecting Linear, Rational or Quadratic curve types in the Calibration Fit table on the Standards page of the worksheet.

Linear Equation

I = coeff1 + conc * coeff2

where: I
coeff 1
coeff 2
conc
=  Intensity
=  Offset
=  Slope
=  Concentration

Rational Equation

I = (coeff1 + coeff2 * conc) / (1 + coeff3 * conc)

where: I
coeff 1
coeff 2
coeff 3
conc
=  Intensity
=  Offset
=  Slope
=  Curvature
=  Concentration

Quadratic Equation

I = coeff1 + conc * coeff2 + conc2 * coeff3

where: I
coeff 1
coeff 2
coeff 3
conc
=  Intensity
=  Offset
=  Slope
=  Curvature
=  Concentration