Mass Spec Tips

Mass Spec Tips is a collection of tips relating to the operation and service of mass spectrometers. Some of these Tips have been reported in our newsletter, "The Mass Spec Source." If you have a question relating to the operation or service of mass spectrometers and would like to have it included in this forum, please Contact Us. Input to this database of MS Tips is needed from our readers to complete this section.

1 - Freon for use in Mass Spectrometer Leak Checking

2 - Mass Spectrometer Probe Cooling

3 - Sample Vials for Direct Probes

4 - Selection of Vacuum Pump Oils for Lowest Mass Spec Background

5 - Determination Linkages in Biomolecules of Disulfide

6 - Transfer of H.P. ChemStation MS and GC Chromatograms from PC to MAC Computer

7 - Repairing Clogged Thermospray Probes

8 - Tuning a Finnigan 5100 to Meet BFB or DFTPP Criteria

9 - H.P. 5971 Transfer Line Tip for Direct Introduction of Capillary Column into MSD Source for Improved Performance

10 - Troubleshooting Finnigan 5100 GC/MS Systems

11 - Leak Checking Mass Spectrometers

12 - Elimination of Memory Peaks and GC Background Noise

13 - SuperIncos Mapped Software Print Buffer Lockup

14 - Reduction of Peak Tailing

15 - Electron Multiplier Sensitivity

16 - INCOS Procedure for Calibrating on the Finnigan 4500

17 - Extending Electron Multiplier Life

18 - What techniques or methods do you use to determine if the electron multiplier is in need of replacement?

19- What techniques or methods do you use to detect vacuum leaks in your mass spectrometer

20 - Extending Lenear Range of the Mass Spec

Article - Improving Sensitivity in the HP 5971 Mass Spectrometer - Part 1 and Part 2

A new 24 page booklet is available written by John Manura of Scientific Instrument Services on the techniques and steps that have been taken to improve the performance and signal-to-noise ratios on the HP 5971 MSD's in our labs. This article combines the experience of more than 20 years of expertise in mass spec to operate the mass spec at its peak performance. The article also describes the improvement in performance by using new higher sensitivity multipliers, high grade vacuum pump oils and other products available from S.I.S.. Call or write for your FREE copy.

Application Notes

A series of 32 application notes on the use of our Short Path Thermal Desorption System and GC Cryo-Trap are available. Applications include the analysis of volatiles in food, forensic samples, plastics, air and commercial products. These application notes are available FREE on request.

The Mass Spec Source Newsletter

Our newsletter 'The Mass Spec Source' is published twice a year. This newsletter is designed for the mass spec community and features articles of interest to the mass spec user, mass spec tips, new products available and other items of general interest to the mass spectrometer user. The newsletter is FREE on request.

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