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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PerkinElmer
- 8,300-350 cm?¹ (KBr); 7,800-225 cm?¹ (CsI); 11,000-375 cm?¹ (extended range dual source); up to 11,000-30 cm?¹ (Tri-Range MIR/NIR/FIR)
- 10,000:1 peak-peak (5 seconds); 34,000:1 peak-peak (1 minute)
- 0.4 cm?¹
- Improved rotary Michelson interferometer, self-compensating for dynamic alignment changes; high reflectivity first-surface aluminum-coated optics; KBr beamsplitter (standard); high performance lithium tantalate pyroelectric detector; two permanently installed internal detectors plus external detector via GPOB
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PerkinElmer
- 8,300-350 cm?¹ (KBr); 6,500-550 cm?¹ (ZnSe optics)
- 9,300:1 peak-peak (5 seconds); 32,000:1 peak-peak (1 minute); 14,500:1 peak-peak (5 seconds) / 50,000:1 peak-peak (1 minute) with optional performance pack
- 0.5 cm?¹
- Rotary Michelson interferometer, self-compensating for dynamic alignment; sealed and desiccated optical unit with OpticsGuard design; vibration isolated baseplate; proprietary extended range KBr beamsplitter; high linearity room temperature detector (LiTaO3 standard, DTGS optional)
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