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
ItemGENESYS™ 40 Vis SpectrophotometerGENESYS™ 50 UV-Vis SpectrophotometerNanoDrop™ Ultra SpectrophotometerNicolet™ Summit™ X FTIR SpectrometerSPECTRONIC™ 200 Spectrophotometer
Citations
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(1)
Catalog Number840-297000840-298000NDULTRAGLIQLAADGAAGFAQXMBNM840-281700 / 840-281800 / 840-281900
Price
TypeVisibleUV-VisibleMicrovolume UV-Vis SpectrophotometerInquireVisible
Wavelength Range325 nm to 1100 nm190 nm to 1100 nm190 to 850 nm8000 to 350 cm-1340 to 1000 nm
Wavelength Accuracy± 0.5 nm±0.5 nm± 1 nmInquire+/- 2 nm
Scanning SpeedAutomatic – up to 1800 nm/minSlow, medium and fast - up to 1600 nm/minInquireInquireInquire
Spectral Bandwidth5 nm2 nm1.8 nmInquire4 nm
Optical SystemDual BeamDual Beam2048-element CMOS Linear Image SensorInquireSingle Beam
Light SourceTungsten-Halogen (>1000 hours)Xenon Flash Lamp (>5 years typical, 3 years guaranteed)Xenon FlashInquireTungsten-halogen
ResolutionInquireInquireInquireBetter than 0.6 cm-1Inquire
DescriptionPerform routine measurements for quality control or teaching in the chemistry classroom with the rugged Thermo Scientific™ GENESYS 40 Vis Spectrophotometer. Offered in a single cell configuration, this insrtrument is designed with a sloping surface to shed spills and a washable sampling compartment... 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™ NanoDrop™ Ultra Spectrophotometer and Fluorometer empowers scientists to quantify and assess nucleic acids and proteins with enhanced precision, speed, and reliability.InquireThe 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
QuantityEAEAEAInquireEA
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