Figure 16.

The PC 7 loadings spectrum of the spectral library of 464 vials. Important spectral variations are marked at 4469, 7161, 7372, and 8371 cm−1.

The PC 7 loadings spectrum of the spectral library of 464 vials. Important spectral variations are marked at 4469, 7161, 7372, and 8371 cm−1.