Proton-transfer-reaction mass spectrometer (PTR-MS)

Summary

The tender concerns the supply of one proton-transfer-reaction mass spectrometer for the Institute of Food Chemistry and Food Biotechnology at Justus Liebig University Giessen. The instrument will be used for real-time measurement of volatile substances in vessel headspace and bioreactor exhaust air. It must provide latency below one second, mass resolution of at least 1000 m/delta for protonated sesquiterpenes at 205 m/z, H3O+ ion operation, the ability to generate different precursor ions, and a means of analysing isomers. The supply also includes software licences for at least three workstations, training for at least three employees, manuals, transport, installation and commissioning. The tender must be submitted electronically by 6 October 2026 at 12:00; the delivery period should not exceed six months.