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Gas Requirements

Created by paulsalverda paulsalverda over 1 year ago | Last modified by kristen.sensabaugh kristen.sensabaugh 11 months ago

What should you consider when it comes to selecting gases for your new GC or GC/MS system? 

  • Which gases will you be using?  

  • Did you confirm that gases available are a supported configuration for installation?
    • Gas requirements are specified in Site Preparation Checklists and Guides.  This information is also included in the free Agilent Education Course: GC-0GEN-1001e - Gas Management Best Practices?     

  • What is the purity of the gases required at the instrument?
    • GC all gases 99.9995%
    • SQ GC/MS 99.9995% He at <=120 psi
    • TQ GC/MS 99.9995% He at <=120 psi
    • TQ GC/MS 99.9995% N2 at <=120 psi
    • CI: Methane 99.999% <=25 psi
    • JetClean: H2 99.9995% <= 25 psi (a regulator is not included to go down from FID H2 to JetClean H2)

  • What is the source (tanks, generators, house plumbing) of the gases?  For example, will it take additional time for gas lines to purge?
    • Will you be connecting into existing plumbing?
    • What should the terminal connection be before the installer arrives?
    • All gases should have 1/8” Swagelok terminal fittings.

  • Will the installer have easy access to the gas supply?  

  • How far away will the gas cylinders be?  

  • Have you purchased the necessary tubing, fittings, valves, traps, etc.? Refer to the  Essential Chromatography and Spectroscopy Catalog Series for part information.
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