A spectrophotometer measures a material’s reflection or transmission by measuring light intensity/absorbency at a specific wavelength. UV-VIS and NIR spectrophotometers measure in those particular spectrums, with wavelength ranges that can span 135–3300 nm. Spectrophotometry is a top quantitative analysis method in fields such as chemistry, materials science, semiconductors, and forensic examination, and in clinical applications. When comparing UV-VIS/NIR spectrophotometers, take note of analysis speed, detection wavelength range, range of absorption, and stray light performance, especially with UV-VIS models.
Although both single-beam and double-beam instruments are available, the double-beam type measures the sample beam and reference beam simultaneously, upping ease of use, reproducibility, and light source and detector stability. Sensitivity in UV-VIS/NIR spectrophotometers can be enhanced through the use of multiple detectors.
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- Wavelength Range: 175 to 3300 nm
- Resolution: Inquire
- Optical System: Double Beam
- Wavelength Accuracy: Inquire
- Wavelength Range: 175 to 1800 nm
- Resolution: Inquire
- Optical System: Double Beam
- Wavelength Accuracy: Inquire
- Wavelength Range: 350 to 2600 nm
- Resolution: Inquire
- Optical System: Crossed Czerny-Turner Spectrographs
- Wavelength Accuracy: Inquire
Hitachi High Technologies America, Inc.
- Wavelength Range: 175 to 2600 nm (3300nm U-4100-L)
- Resolution: 0.01 nm
- Optical System: Double-Beam Double-Monochromator
- Wavelength Accuracy: UV-Vis ±0.2 nm, NIR ±1.0 nm
- Wavelength Range: 170 to 700 nm or 200 to 800 nm
- Resolution: down to 0.3 nm
- Optical System: Subtractive Double Grating Monochromator
- Wavelength Accuracy: better than 0.125 nm
- Wavelength Range: 170 to 2500 nm (depending on gratings and detectors)
- Resolution: down to 0.3 nm
- Optical System: Subtractive Double Grating Monochromator
- Wavelength Accuracy: better than 0.125 nm
- Wavelength Range: 240 to 2600 nm
- Resolution: 0.1 nm
- Optical System: Double Beam
- Wavelength Accuracy: +/- 0.2 nm (UV VIS), +/- 0.8 nm (NIR)
- Wavelength Range: 175 to 2600 nm
- Resolution: 0.1 nm
- Optical System: Double Beam
- Wavelength Accuracy: +/- 0.2 nm (UV VIS), +/- 0.8 nm (NIR)
- Wavelength Range: 185 to 3300 nm
- Resolution: 0.1 nm
- Optical System: Double Beam
- Wavelength Accuracy: UV/VIS region: +/- 0.2 nm, NIR region: +/- 0. 8 nm
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