Abstract
With the increasing take-up of PAT 1 by the pharma- and bio- industries there is a critical need for robust spectral calibrations for processes which are subject to the variations in physical properties such as sample compactness, surface topology, etc. The variation in the optical path-length materializing from the physical differences between samples may result in multiplicative light scattering influencing spectra in a nonlinear manner leading to the poor calibration performance. A new approach “Optical Path Length Estimation and Correction” overcomes the limitations of existing light scattering correction methods.
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