BUCHI NIRCal - Manual (Page 115)

Chemometrics
NIRCal 5.5 Manual, Version A 115
Absorbance
It is useful in case the Lambert-Beer law is valid (not too high absorption).
Formula:
Type
This pretreatment is not depending on the calibration wavelengths.
NOTE
NIRCal 5 calculates maximum 10 absorption units (means: R = 0.0000000001).