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
ItemEvolution™ One/One Plus UV-Vis SpectrophotometerEvolution™ Pro UV-Vis SpectrophotometerGENESYS™ 140 Vis SpectrophotometerNanoDrop™ Lite Plus SpectrophotometerSPECTRONIC™ 200 Spectrophotometer
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Catalog Number840-341400 / 840-341500840-340100 / 840-340200840-308000NDLPLUSGL / NDPLUSPRGL840-281700 / 840-281800 / 840-281900
Price
TypeUV-VisibleUV-VisibleVisibleUV-VisVisible
Wavelength Range190 to 1100 nm190 to 1100 nm325 nm to 1100 nm230 nm, 260 nm, 280 nm340 to 1000 nm
Wavelength Accuracy± 0.8 nm (full range 190 to 1100 nm)± 0.30 nm, 190 to 900 nm± 0.5 nm± 1 nm+/- 2 nm
Scanning Speed< 1 to 6000 nm/min< 1 to 6000 nm/min; variableAutomatic – up to 1800 nm/min≤ 5 secondsInquire
Spectral BandwidthInquireSelectable 0.5, 1.0, 1.5, 2.0, 4.0 nm5 nmInquire4 nm
Optical SystemDouble BeamDouble beam with sample and reference cuvette/accessory positionsDual Beam2048-element CMOS Linear Image SensorSingle Beam
Light SourceXenon flash lampXenon flash lampTungsten-Halogen (>1000 hours)Light emitting diodesTungsten-halogen
ResolutionInquireInquireInquire≤ 1.8 nm (FWHM at Hg 254 nm)Inquire
DescriptionFor routine, complex research and advanced applications, including current pharmaceopia compliance, the Thermo Scientific Evolution One/One Plus UV-Vis Spectrophotometer series offers real innovations that provide enhanced usability and performance - without added complexity. With Thermo Scientific ... Read MoreFor 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 MoreThe Thermo Scientific NanoDrop Lite Plus Spectrophotometer is a compact, personal UV-Vis microvolume spectrophotometer that complements the full-featured NanoDrop One/OneC and NanoDrop Eight instruments. The NanoDrop Lite Plus is an affordable choice for fast, easy measurements, designed to deliver ... 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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