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™ Peltier Thermostatting AccessoriesEvolution™ One/One Plus UV-Vis SpectrophotometerGENESYS™ 140 Vis SpectrophotometerGENESYS™ 50 UV-Vis SpectrophotometerSPECTRONIC™ 200 Spectrophotometer
Citations
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Catalog Number699-131100840-341400 / 840-341500840-308000840-298000840-281700 / 840-281800 / 840-281900
Price
TypeSingle Cell Peltier SystemUV-VisibleVisibleUV-VisibleVisible
Wavelength RangeInquire190 to 1100 nm325 nm to 1100 nm190 nm to 1100 nm340 to 1000 nm
Wavelength AccuracyInquire± 0.8 nm (full range 190 to 1100 nm)± 0.5 nm±0.5 nm+/- 2 nm
Scanning SpeedInquire< 1 to 6000 nm/minAutomatic – up to 1800 nm/minSlow, medium and fast - up to 1600 nm/minInquire
Spectral BandwidthInquireInquire5 nm2 nm4 nm
Optical SystemInquireDouble BeamDual BeamDual BeamSingle Beam
Light SourceInquireXenon flash lampTungsten-Halogen (>1000 hours)Xenon Flash Lamp (>5 years typical, 3 years guaranteed)Tungsten-halogen
ResolutionInquireInquireInquireInquireInquire
DescriptionTemperature control and sample stirring are important for many UV-Visible analysis methods. Peltier thermostatted accessories outperform traditional heater/chiller units to deliver superior performance with compact integrated design, simple set-up, and fast, precise temperature control. Thermo ... Read MoreFor 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 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 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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