An infrared spectrophotometer is an analytical instrument used to identify materials including organic polymers. Infrared spectrophotometers record the relative amount of energy as a function of the wavelength/frequency of the infrared radiation when it passes through a sample. Therefore, chemical structures of different samples will reflect differences in the IR absorption spectrum allowing for identification of a sample. Unlike a dispersive spectrometer, an FTIR spectrometer or FTIR spectrophotometer is used to simultaneously obtain spectral data of a sample. It does this by using an interferometer to collect the interferogram, also known as the raw data/signal format, which can then be translated into the infrared spectrum of the sample by means of a fourier transform algorithm. As a result, there are many advantages including greater signal-to-noise ratio, high resolution, higher throughput, and a short wavelength limit. FTIR spectrometers can be used in a variety of industries including environmental, pharmaceutical, and petrochemical.
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Thermo Fisher Scientific
- 7800 to 350 cm-1 optimized, mid-infrared KBr beamsplitter
11,000 to 375 cm-1 XT KBr extended range mid-infrared optics - 50,000:1 (peak to peak, 1 minute measurements, factory verified)
- 0.25 cm-1
- LightDrive optical engine technology
Thermo Fisher Scientific
- Depends on model
- 50,000:1 (guaranteed)
60,000:1 (typical) - Better than 0.25 cm -1
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Thermo Fisher Scientific
- 15 to 27,000 cm-1
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- Better than 0.09 cm-1
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Thermo Fisher Scientific
- 6000 to 650 cm-1
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Thermo Fisher Scientific
- 8000 to 350 cm-1
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- Better than 0.6 cm-1
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