This International Standard specifies a method for sampling, sample conditioning and determination of
dinitrogen monoxide (N2O) content in the flue gas emitted from ducts and stacks to atmosphere. It sets out the
non-dispersive infrared (NDIR) analytical technique, including the sampling system and sample gas
conditioning system.
This International Standard is a reference method for periodic monitoring and for calibration, adjustment or
control of automatic monitoring systems permanently installed on a stack.
This reference method has been successfully tested on a sewage sludge incinerator where the N2O
concentration in the flue gas was up to about 200 mg/m3.