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Quantitech FTIR Gasmet DX-4000 can monitor up to 300 different compounds of varying concentration and other gases can be added for future applications at little or no extra cost.

FTIR stands for Fourier Transform Infrared, the preferred method for infrared spectroscopy.

An FTIR spectrometer obtains infrared spectra by first collecting an ‘interferogram’ of a sample signal with an interferometer, which measures all infrared frequencies simultaneously to produce a spectrum.

Sample identification is possible because chemical functional groups absorb light at specific frequencies.

In addition, through calibration of the spectrometer, it is possible to determine the intensity of the absorption (relative to the component concentration).

The Gasmet FTIR gas analyser from Quantitech can measure any gas, with the exception of the following: noble (or inert) gases; homonuclear diatomic gases (for example, N2, Cl2, H2, F2); and H2S (detection limit too high).

The majority of FTIR analysers are used for process control, exhaust monitoring, emissions monitoring, workplace/industrial hygiene monitoring and research.

As a multi-component gas analyser, the Gasmet FTIR is ideal for customers that need to analyse multiple components, analyse hot/wet gas (for example, hot humid applications for HCN, NH3 or HCl) or analyse any gas in complicated gas mixtures.

The Gasmet library of reference spectra consists of reference files of gas spectra measured to-date with different Gasmet gas analysers.

The library contains hundreds of spectra and each reference spectrum contains both quantitative and qualitative information about the component.

High levels of accuracy and low levels of maintenance are achieved as a result of continuous calibration with a He-Ne laser, which provides a stable wavenumber scale.

In addition, high spectral signal-to-noise ratio and high wavenumber precision are characteristic of the FTIR method.

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