• Ghost peaks and sudden baseline shifts

    5975C MSD and 7890 GC. I am fairly new to GC-MS and am having issues with my baseline. I have recently begun seeing ghost peaks and sudden baseline shifts after replacing a column. I did inlet maintenance an...
    karrun
    last modified by karrun
  • ?a new problem with front inlet shutdown in high efficient GCMS

     Dear colleagues      we encountered a new problem with front inlet shutdown in high efficient GCMS , the inlet itself appear OK before the beginning of run method and still OK during syringe ...
    walleed
    created by walleed
  •    the library search score for a compound is different with different instrument

      .the library search score for a compound is different with different instruments nowadays,in my work we have different types of gc-ms, we bought new gcms 7890B- 5977B HES , when comparing the result of the same...
    walleed
    last modified by walleed
  • MS Workstation 7.0.1 - Suspended Automation (Help!!)

    Hi, I having troubles in making a sequence in the 240 Ion Trap and 7890A GC. The MS Workstation suspends the automation with these messages. What could be causing this problem?  
    dflores
    last modified by dflores
  • Rising Baseline problem after installing new filament (an old Varian 2100D GC/MS).  Does not seem to be a leak or water issue.  Any help/thoughts?

    Attached is a copy of the "after" chromatogram.
    e2c
    created by e2c
  • Using *.L library files in OpenLAB CDS 2.x Data Analysis

    In OpenLAB CDS 2.x Data Analysis there is not a native way to use the HP/Agilent MSD Chemstation Data Analysis *.L library files, including NIST and also custom libraries.   To use these *.L libraries in OpenLAB...
    ryan_ohearn
    last modified by ryan_ohearn
  • Cleaning HED Detector Assemblies 5975-5977.pdf

    Sometimes getting the "HED Error" message can be a dirty HED assembly.  The cleaning process for the HED assembly is recommended when the GCMS has high noise background or spiking with the HED on. This can happen...
    ryan_ohearn
    last modified by ryan_ohearn
  • solvent delay issues with 5973 MS

    We have inherited a 6890/5973 GC-MS system running G1701BA B02.00 chemstation software under Windows NT SP 6a.  The system comes up OK and performs a successful tune. However, when performing a run, the "override...
    robert.braga
    last modified by robert.braga
  • 5972 MSD

    Has anyone got a pdf of the 5972 MSD manual, or would anyone be able to point me in the direction of where to get a copy please?   Thanks,   Aden
    aden89
    last modified by aden89
  • Common MSD Contaminants

    Common MSD Contaminants from the 5975 Series MSD Troubleshooting and Maintenance Manual.
    ryan_ohearn
    last modified by ryan_ohearn
  • UPS Recommendation for Agilent MSD

    UPS Systems - For use on GC/MS Systems Agilent Technologies does not recommend the use of a UPS or other isolation devices to supply power to a GC, GC/MS or ICP-MS system. These instruments present a highly varying l...
    agilent
    last modified by agilent
  • Nitrogen in New Indicating Gas Traps

    Nitrogen in New Indicating Gas Traps
    ryan_ohearn
    last modified by ryan_ohearn
  • Peak at m/z 32 but no m/z 28. Oxygen but no nitrogen?

    Hi everyone. Posting on behalf of someone else.   My colleague is using an HP 6890 GC with a 5973 mass selective detector. We're observing a mysterious oxygen peak at m/z 32. I would normally suspect it's caused...
    testuser
    last modified by testuser
  • GCMS History 1970-2013

    Slide presentation showing HP, Varian, and Agilent GC/MS technology from 1970 through 2013.
    agilent
    last modified by agilent
  • GC-MS History: From HP to Agilent

    This slide deck shows the different models of Hewlett Packard GC/MS units dating from 1971 through 1999, when Agilent was spun off from HP.
    agilent
    last modified by agilent