Spectrophotometer

Spectrophotometers are used to measure the concentration of a known substance in a solution. They do this by passing a light through the substance and measuring light intensity as a function of wavelength. Either single beam or double beam spectrophotometers can be purchased. In a single beam spectrophotometer, a reference standard is used to measure light intensity before and after the sample is loaded. For double beam spectrophotometers the beam is split with one beam passing through the standard and the other through the sample to compare intensities. While single beam spectrophotometers are typically less expensive and have higher sensitivity, double beam spectrophotometers tend to be more stable and easier to use. Spectrophotometers are important pieces of equipment in chemistry, physics, biochemistry, clinical, and materials testing labs.

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CompanyThermo Fisher ScientificThermo Fisher ScientificThermo Fisher ScientificThermo Fisher ScientificThermo Fisher Scientific
ItemThermo Scientific™ Evolution™ Pro UV-Vis SpectrophotometerGENESYS™ 140 Vis SpectrophotometerGENESYS™ 150 UV-Vis SpectrophotometerGENESYS™ 50 UV-Vis SpectrophotometerSPECTRONIC™ 200 Spectrophotometer
Citations
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Catalog Number840-340100 / 840-340200840-308000840-300000840-298000840-281700 / 840-281800 / 840-281900
Price
TypeUV-VisibleVisibleUV-VisibleUV-VisibleVisible
Wavelength Range190 to 1100 nm325 nm to 1100 nm190 nm to 1100 nm190 nm to 1100 nm340 to 1000 nm
Wavelength Accuracy± 0.30 nm, 190 to 900 nm± 0.5 nm± 0.5 nm±0.5 nm+/- 2 nm
Scanning Speed< 1 to 6000 nm/min; variableAutomatic – up to 1800 nm/minSlow, medium and fast - up to 1600 nm/minSlow, medium and fast - up to 1600 nm/minInquire
Spectral BandwidthSelectable 0.5, 1.0, 1.5, 2.0, 4.0 nm5 nm2 nm2 nm4 nm
Optical SystemDouble beam with sample and reference cuvette/accessory positionsDual BeamDual BeamDual BeamSingle Beam
Light SourceXenon flash lampTungsten-Halogen (>1000 hours)Xenon Flash Lamp (>5 years typical, 3 years guaranteed)Xenon Flash Lamp (>5 years typical, 3 years guaranteed)Tungsten-halogen
ResolutionInquireInquireInquireInquireInquire
DescriptionFor routine, complex research and advanced applications, including current pharmaceopia compliance, the Thermo Scientific Evolution Pro UV-Vis Spectrophotometer series brings together reliable, versatile hardware, a broad range of accessories, with easy-to-use, easy-to-learn Thermo Scientific ... Read MorePerform quantitative measurements in routine industrial QA/QC or university chemistry labs with the automated and network-ready Thermo Scientific™ GENESYS 140 Vis Spectrophotometers. Optimized for usability and performance, this platform features a high-resolution color touchscreen, Wi-Fi ... Read MorePerform quantitative measurements in routine industrial QA/QC or university chemistry labs with the  automated and network-ready Thermo Scientific™ GENESYS™ 150 UV-Visible Spectrophotometer. Optimized for usability and performance, this platform features a high-resolution color touchscreen, Wi-Fi ... Read MorePerform routine measurements for quality control or teaching in the chemistry classroom with the rugged Thermo Scientific™ GENESYS™ 50 UV-Visible Spectrophotometer. Offered in a single cell configuration, this instrument is designed with a sloping surface to shed spills and a washable sampling ... Read MoreThe Thermo Scientific SPECTRONIC 200 is the standard for rugged, simple-to-use visible spectrophotometers for teaching applications. Designed expressly for the teaching laboratory, the SPECTRONIC 200 spectrophotometer includes a removable, washable sample compartment that simplifies spill cleanup ... Read More
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