Agilent Technologies ALS Handbuch Seite 82

6850 Series GC Site Preparation
Table 37 Gases usable with Agilent GCs and packed columns
Detector type
Electron capture (ECD)
Flame ionization (FID)
Flame photometric (FPD)
Thermal conductivity (TCD)
1 Slightly greater sensitivity than helium. Incompatible with some compounds.
2 For analysis of hydrogen or helium. Greatly reduces sensitivity for other compounds.
For installation checkout, Agilent requires the gas types shown in
82
Carrier gas Comments
Nitrogen Maximum sensitivity
Argon/methane Maximum dynamic range
Nitrogen Maximum sensitivity
Helium Acceptable alternative
Hydrogen
Helium
Nitrogen
Argon
Helium General use
Hydrogen Maximum sensitivity
Nitrogen Hydrogen detection
Argon Maximum hydrogen
sensitivity
Detector, anode purge, or
reference
Nitrogen
Argon/Methane
Hydrogen and air for
detector.
Hydrogen and air for
detector.
Reference must be same
as carrier and makeup.
1
2
1
GC, GC/MS, and ALS Site Preparation Guide
Table 38.