GC-MD and GC-ECD
The gas chromatorgraph-electron capture detector (GC-ECD) is used to measure nitrous oxide and sulphur hexafluoride while the gas chromatograph-multi detector (GC-MD) also measures hydrogen and carbon monoxide.
AGAGE calibration scales are used for all species measured in the network with the exception of CO2 and CH4. A standard calibration tank is measured alternately to each air measurement.
Calibration scales
N2O | SIO-98 |
SF6 | SIO-05 |
CO | CSIRO-94 |
H2 | MPI2009 |