Mass Spectrometry Laboratory

School Affiliated departments and LAS

College of Liberal Arts & Sciences

Waters GCT Premier EI/CI/FD/FI

(Acquired in 2012)

Waters GCT Premier
The GCT Premier™ benchtop orthogonal acceleration time-of-flight (oa-TOF) mass spectrometer delivers high sensitivity, resolution, and exact mass measurements for GC/MS applications. Its fast data acquisition rates and automated workflow features match the requirements for MS detection when coupled to high-resolution capillary GC. A variety of GC inlet, ion source and software options makes the GCT Premier a versatile choice for a range of analytical challenges, from identifying contaminants in food and environmental samples to metabolomic studies.


  • High MS resolution for the selectivity needed to separate analyte spectra from isobaric interferences and background chemical noise
  • High sensitivity for achieving very low detection limits
  • High linear dynamic range, which allows experiments to be carried out across a range of concentration levels
  • Exact mass MS measurements, which give elemental composition information that can be used to identify analyte compounds; you can obtain exact mass measurements on both molecular and fragment ions, simplifying the process of spectrum interpretation
  • Versatile ionization options that apply to a range of compound classes, including support for both direct insertion probe and GC analyses
  • Versatile software options for a variety of applications

The GCT Premier is the primary instrument for:

  • GCMS (LR and HR EI; positive mode LR and HR CI; negative mode LR and HR CI and LRFI)
  • GCMS with headspace injection and SPME
  • Direct insert probe FD, FI and LIFDI
  • Direct insert probe EI (LR and HR), CI (LR and HR in both positive and negative mode)
  • Direct insert probe desorption chemical ionization (DCI).

For more information about LIFDI go to

For More information about SPME go to

For More information about Headspace sampling go to

University of Illinois at Urbana-Champaign
Mass Spectrometry Laboratory
35 Noyes Laboratory
MC-712 Box 51-1
505 South Mathews Ave.
Urbana, IL 61801
Furong Sun

tel: 217/333-2545
frs [at] illinois [dot] edu
Lab Hours: 24/7 access by key
Staff Available 8 am to 4:45 pm
Monday through Friday

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scs_web [at] scs [dot] illinois [dot] edu