The Vocus Flex incorporates interchangeable, drawer-style ion source modules that enable rapid switching between the VUV-based Vocus PTR Reactor and the fragmentation-free Vocus Aim Reactor. Automatic ...

Chemi-ionization reactions involve the formation of ionic products through the transfer of electrons during collisions between excited and ground-state species. These processes, which can occur in ...

Proton transfer reaction mass spectrometry (PTR-MS) and selected ion flow tube mass spectrometry (SIFT-MS) are decades-old field-deployable chemical ionization technologies with portable features.

Selected ion flow tube mass spectrometry (SIFT-MS) is a form of direct injection mass spectrometry that analyzes volatile organic compounds (VOCs) in real-time that are present in air with standard ...