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.
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.
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.
 Yttria coated filament at start |
 Yttria coated filament after 16,000 cycles |
New Pumps Added to the List of LOW COST S.I.S. Rotary Vane
Vacuum Pumps - Save 35 - 50% off the price of comparable vacuum pumps.
Adixen (Alcatel) ACP Series Compact Dry Roughing Pumps - a frictionless pumping module, optimized for operation without internal lubricant.
Next-Advance Lab Products - affordable molecular biology instruments that automate mundane tasks, freeing scientists for repetitive, time consuming procedures.
- Direct Replacement for the Shimadzu QP5000 Filament.
PCI Analytics Products - product solutions for all Analytical Instrumentation
SilTite™ FingerTite, the next generation GC capillary ferrule system without the use of any tools.
(25% discount until Oct 31)
Direct Replacement for the Heated Capillary in the Thermo-Fisher Scientific TSQ & LCQ Mass Spectrometers now available
- Ideal for use in analytical instrumentation
- Will improve your laboratory workflow and reporting confidence in many ways
DigiVac Bench Top Vacuum Gauges
- Vacuum instrumentation with everything you need to go to work
Imtakt HPLC Columns
-offer a wide variety of unique stationary phases in their HPLC
columns
Programmable syringe pumps for controlled flow. Model NE-300 priced at only $275.00
NEW: Wiley 9th Edition - 660,000-850,000
spectra (a 65% increase). 
NEW: Agilent 5973/75 Replacement Source
Heater and Temperature Sensor 
NEW: SIS™ Direct Replacement
Filament for the Amatek/Dycor RGA Leak Detectors and Quadrupoles
(p/n 95381VE), which tests have shown increase service life. 
NEW: SIS™
Replacement Filter Elements For Edwards Oil Mist Eliminators -
Save up to 25% off the price of comparable Edwards replacement
elements. 
Identify mass spectra via library
search with the fully-evaluated, most widely used mass spectral
reference library, compiled by the National Institute of Standards
and Technology (NIST). 
View and capture images or video at
20x/400x power on a PC computer via attached USB cable. 