Open Access

Table 1.

Verification of different calibration with 162 samples: A: original calibration, no data, B: 2 wavelengths, first derivative, C: 4 wavelengths, first derivative, D: 4 wavelengths, centred average.

Verification\calibration A B C D
Number of samples which not achieving the criteria 58 34 38 23
Percent of samples which not achieving the criteria (%) 36 20 24 14
Minimal difference from classical results −1.0 −0.5 −0.5 −0.6
Maximal difference from classical results 0.7 39.6 22.8 1.1

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