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
ItemSPECTRONIC™ 200 SpectrophotometerEvolution™ Peltier Thermostatting AccessoriesEvolution™ Pro UV-Vis SpectrophotometerNanoDrop™ Lite Plus SpectrophotometerNanoDrop™ Ultra Spectrophotometer
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Catalog Number840-281700 / 840-281800 / 840-281900699-131100840-340100 / 840-340200NDLPLUSGL / NDPLUSPRGLNDULTRAGL
Price
TypeVisibleSingle Cell Peltier SystemUV-VisibleUV-VisMicrovolume UV-Vis Spectrophotometer
Wavelength Range340 to 1000 nmInquire190 to 1100 nm230 nm, 260 nm, 280 nm190 to 850 nm
Wavelength Accuracy+/- 2 nmInquire± 0.30 nm, 190 to 900 nm± 1 nm± 1 nm
Scanning SpeedInquireInquire< 1 to 6000 nm/min; variable≤ 5 secondsInquire
Spectral Bandwidth4 nmInquireSelectable 0.5, 1.0, 1.5, 2.0, 4.0 nmInquire1.8 nm
Optical SystemSingle BeamInquireDouble beam with sample and reference cuvette/accessory positions2048-element CMOS Linear Image Sensor2048-element CMOS Linear Image Sensor
Light SourceTungsten-halogenInquireXenon flash lampLight emitting diodesXenon Flash
ResolutionInquireInquireInquire≤ 1.8 nm (FWHM at Hg 254 nm)Inquire
DescriptionThe 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 MoreTemperature 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 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 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™ NanoDrop™ Ultra Spectrophotometer and Fluorometer empowers scientists to quantify and assess nucleic acids and proteins with enhanced precision, speed, and reliability.
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