PDL ppm
Method/Technique
Hydrogen
0.05
GC-PDID
Nitrogen
Methane
Carbon Dioxide
FTIR
Oxygen
0.1
Galvanic Cell
Water
Hygrometer
C2-C5 Hydrocarbons*
0.2
GC-AED
* Lower levels can be measured by concentration followed by Thermal desorption GC-FID
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