A PTR-MS
This is a Proton Transfer Reaction - Mass Spectrometer, one of my favorite instruments. I wrote several articles on my scicomm blog explain how PTR-MS can be used to assess food quality and authenticity, to identify early stage cancer, to determine the level of extrogen analyzing the breath of women.
Want to know more? Check https://scicommforeveryone.com/?s=mass+spectrometry
