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Normalization, 3 normalization – BUCHI NIRCal User Manual

Page 92

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NIRCal 5.5 Software Manual

92

NIRCal 5.5 Manual, Version A

** MSC and Mean Centering are also depending on the C-Set spectra selection. NIRCal handles
this dependency automatically. The necessary data is stored in the pretreatments itself so they can
also operate automatically in the predictor of the application.

Legend of formula on the following pages:
Capital Letters: Vectors
Small Letters: Scalars
T: Transmittance or Reflectance
A: Absorbance
S: Spectrum
h: delta X, distance of base point on the x-axis

3.5.3 Normalization

Normalization

The aim of normalization is to reduce baseline variations.

MSC is used to reduce or to increase baseline effects caused by scattering.
Tip

for solids

reduce particle size effects

reduce pressure difference


Overview of all Normalization pretreatments:

Original Spectra

Normalization by Closure*

Normalization by Maxima*