Mass spectrometer manufacturers tandem

The most common types of MS/MS instruments available to researchers in food chemistry include triple quadrupole mass spectrometers and ion traps. Less common but commercially produced tandem mass spectrometers include magnetic sector instruments, Fourier transform ion cyclotron resonance (FTICR) mass spectrometers, and quadrupole time-of-flight (QTOF) hybrid instruments (Table A.3A.1). Beginning in 2001, TOF-TOF tandem mass spectrometers became available from instrument manufacturers. These instruments have the potential to deliver high-resolution tandem mass spectra with high speed and should be compatible with the chip-based chromatography systems now under development. 

The electrospray and continuous flow-FAB experiments were carried out on a Finnigan-MAT TSQ700 triple quadrupole low resolution tandem mass spectrometer and a JEOL four sector HXllO/HXllO magnetic high resolution tandem mass spectrometer, respectively. The electrospray ionization source was manufactured by Analytica of Branford, CT. The MALDI experiments were done on a Vestec-2000 time-of-flight mass spectrometer equipped with a nitrogen laser. Chromatographic purifications of standards were performed on Applied Biosystems HOB microbore HPLC systems. 

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