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Thermo Fisher Scientific

TN 9476 - FT-IR Sampling Parameters for Exhaust Gas Measurements


Fourier transform infrared (FT-IR)spectroscopy is a useful solution to the analytical problems of exhaust measure-ment. While traditional on-line analyzers require exhaust to be diluted and cooled before sampling, FT-IR can measure the raw exhaust directly. Many highly reactive species in exhaust can be measured by FT-IR down to low part-per-million levels.