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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Hitachi High-Tech America, Inc.
- 240 to 2600 nm
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- Prism-grating (P-G) double monochromator optical system
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- Marvelous Instrument with Accuracy & Speed
Agilent Technologies
The Universal Measurement Spectrophotometer Cary 7000 model is available in our laboratory and we work with that instrument frequently for measuring optical properties. Sometimes we also use this ... Read Review