The Joint Mass Spectrometry Centre (JMSC) is divided into three corresponding research areas at the University of Rostock and Helmholtz Zentrum München (see below). The JMSC cooperates with the University of the Bundeswehr München, Institute of Environmental Engineering and Chemistry, through a contractual partnership with the CMA. Ongoing developments in online single-photon ionisation mass spectrometry (SPI-MS) in our cooperation group have led to a number of patents and third party projects, often carried out with direct industrial support. To satisfy the upcoming demand, a spin-off company was founded: Photonion GmbH.