Tandem Ionisation® allows both soft and classical electron ionisation mass spectra to be acquired simultaneously across an entire GC or GC×GC run.

This provides analysts the capability to acquire both soft EI spectra and conventional 70 eV spectra at the same time in an integrated workflow. This means that a single GC or GC×GC run can provide all the information needed to fully characterise a sample for both target compounds and unknowns. Tandem Ionisation, unique to Markes, generates two spectra from a single peak by rapid switching between ‘soft’ ionisation (typically 10–16 eV) and conventional ‘hard’ ionisation (70 eV), and is fully automated by Markes’ TOF-DS™ software for BenchTOF.

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New application notes available

• Application Note 537 – Comprehensive insights into tobacco smoke constituents using TD–GC×GC–TOF MS with Tandem Ionisation
• Application note 538 – Detailed characterisation of essential oils by flow-modulated GC×GC–TOF MS with Tandem Ionisation