What is FTIR Spectrophotometer?

Fourier transform infrared spectrometer is abbreviated as FTIR. It is different from the principle of dispersive infrared spectroscopy. It is an infrared spectrometer developed based on the principle of Fourier transformation of infrared light after interference. It is mainly composed of the infrared light source, interferometer, sample chamber, detector amplifier, an analog-to-digital converter (A/D), and computer composition. It can carry out qualitative and quantitative analysis of samples and is widely used in the fields of medicine and chemical industry, geology and mining, petroleum, coal, environmental protection, customs, gem identification, criminal investigation identification, etc.

Fourier Transform Infrared Spectrometer

Advantages of Fourier Transform Infrared Spectrometer

  • Why would we rather use FTIR instruments than dispersive ones? There are three major advantages of FT instruments.
  • Multiplex: since all wavelengths are measured simultaneously, the measurement time is greatly reduced.
  • Throughput: FT instruments don’t use slits, therefore the amount of light entering into the instrument is much larger, and the measurement is less sensitive to noise.
  • Connes: since we use an extremely accurate laser for the position determination of the mirror, the precision is very high, better than 0.01 cm-1. This is better for quantitative analysis and library searching.

Applications of FTIR Spectrophotometer

FTIR can reveal the composition of solids, liquids, and gases. Its most common application is to identify unknown materials and confirm production materials (raw materials/finished products).

1. Chemical and pharmaceutical fields

2. Coal and petroleum analysis

3. Health and quarantine

4. Food

5. Environmental protection

6. Optical coating and other fields, etc.

Fourier Transform Infrared Spectrometer

Specifications of FTIR Spectrophotometer

Model DW-FTIR-530A
Wavenumber Range 7800cm-1~350cm-1
Wavenumber Accuracy ±0.01 cm-1
Resolution 0.85 cm-1
Detector Room temperature DLATGS module (standard); Temperature stabilized, high sensitivity DLATGS module (optional)
Beam Splitter Multilayer Ge coated KBr

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