Markes International has launched a web-based library that will allow users to see how “soft” electron ionisation (EI) could benefit their GC-MS application. Visitors can view time-of-flight mass spectra generated using Markes’ Select-eV technology. The library has been launched with the 70 eV and low-eV spectra of over 350 compounds, and will be updated quarterly with curated spectra acquired in Markes’ laboratories as well as from Select-eV users.