In JACS 143 (2021) 5508, I demonstrated that it is possible to evaporate a triradical. This is the molecule with the highest number of radical sites ever evaporated so far. I have used the same method that I previously used for the diradicals. I consider 1) the stochiometric information from the XPS spectra; 2) the comparison between films and powder XPS spectra (the powder does not undergo evaporation) looking at the shape and the components of the single spectroscopic lines using a best-fit procedure that I have also previously correlated with electron spin resonant (ESR) spectroscopic investigations; 3) the comparison between the experimental and the theoretical curves obtained by DFT calculations. I have also investigated the drop-cast films using the same techniques. The results further affirm the evaporation does not degrade the triradical. Finally, I monitor the lifetime of the films in UHV (base pressure 2 × 10 -10 mbar) by using XPS. I adopted the protocol previously applied to radical and diradical films. I observed no major changes in the spectra of the evaporated films after their exposure to UHV at room temperature for around 17 h. However, after 4 h of air exposure, I observe major changes in their XPS spectra, indicating film degradation.