Scientific apparatus, namely, mass spectrometers and parts thereof, in particular, time-of-flight mass spectrometers and aerosol time-of-flight mass spectrometers; downloadable and recorded computer programs and computer software for operating mass spectrometers; downloadable and recorded computer programs and computer software, in particular, deep learning algorithms, for analyzing and displaying spectral data recorded by mass spectrometers, in particular, to identify chemicals and microorga...