Sample cells are made of one of the three materials listed below. L E : absorption coefficient (a constant for given samples) C : Concentration of sample L : Cell length A square cell with a stopper is generally used to measure volatile liquid samples, and a microcell is used to measure a sample with small volume.By utilizing this formula, an appropriate optical path length can be determined. The relationship between absorption strength (absorbance) and cell length is described below. In cases when absorption is low, a cell with a lo nger optical path length is used, whereas when absorption is high, a cell with a shorter optical path length is used. Generally, the rectangular cell with an o ptical path length of 10 mm is used. The figure below shows the ten sample cell shapes. Lineweaver-Burk, Hanes Woolf, Eadie-Hofstee.Samples are placed in cells for measurement. Personal Spectroscopy Software (standard) Main spectrophotometer 570W X 660D X 275Hmm about 36kg. (excluding noise 2nm slit width and SLOW wavelength scanning speed). Find used photometers and spectrophotometers on Machinio. UV-2501PC: Less than 0.0003% at 220nm and 340nm.ĭouble-beam, direct ratio system with dynode feedback.Ībsorbance (Abs.), transmittance (%), reflectance (%) and energy (E).Ībsorbance : -4~5 Abs. Used Shimadzu photometers & spectrophotometers for sale in Canada. UV-2501PC: Double monochromator with a high-performance double-blazed holographic grating in the aberration corrected Czerny-Turner mounting.ĥ0W halogen lamp (2,000 hours life) and D2 lamp (500 hours life). UV-2401PC: Single monochromator with a high-performance blazed holographic grating in the aberration corrected Czerny-Turner mounting. (The measurable range may be restricted in the shorter wavelength side depending on the type of photomultiplier used.) Extendable to 1,100nm through the use of the optional photomultiplier. The sodium iodide spectra for the double monochromator UV-2501PC and a single monochromator instrument described below put this information into practical terms.ġ90 to 900nm (performance guaranteed range). Shimadzu UV-2450 Spectrophotometer With Temperature Controller TMSPC-8 2,575.00 225.00 shipping Hach DR/3000 Spectrophotometer 199.00 41.90 shipping or Best Offer Only 1 left T185203 Perkin Elmer Lambda 25 UV/Vis Spectrometer L600000B Lights up Untested (1) 700. Therefore, single-beam designs tend to be used in lower priced systems. 9, hold square cells with optical path lengths of 10 mm. The single-beam configuration has a simpler design because it does not need a mechanism for splitting the beam into sample and reference beams. In a standard configuration, the sample compartment contains cell holders that, as shown in Fig. The face of the grating is actually divided into two unique areas for short and long wavelength measurements. An explanation of the difference between single-beam and double-beam spectrophotometers is given in the Q&A of previous issue of UV Talk Letter. By creating two blaze wavelengths (200nm and 600nm), Shimadzu has overcome the energy loss and sensitivity restrictions usually associated with double monochromator instruments. Shimadzu has achieved the world's lowest level of stray light and highest energy throughput with this unique design. The double blazed grating, double monochromator (DDM) in this instrument is just waiting for those samples. When you can't dilute the sample or reduce the path length, think of the UV-2501PC. Several beers from different countries were tested. MultiSpec-1500 only) Stops down the measuring light beam for measurement with 4mm-wide. What's more, it can resolve the triplet peaks in the vapor spectrum of benzene near 250nm with ease.Īn Unparalleled Instrument For Your Demanding Applications The beer color method of the Gallery analyzer was compared with manual spectrophotometer Shimadzu MultiSpec 1501 (Element resolution < 1.5 nm, Wavelength accuracy ± 1.0 nm). Accessories that are used for all shimadzu spectrophotometers. Additional software enhancements like Kubelka-Munk conversion, area calculations and peak picks make this an instrument for the real world. From small sample volumes to highly absorbing samples, the software gives you the power and versatility of an extremely sophisticated system in a package that's easy to learn and use. Manufacturer: SHIMADZU Model: Multispec-1501 CAE has broad access to semiconductor related equipment direct from fabs, often unavailable through other sources. The low stray light/wide dynamic range/small beam size combination makes this instrument well suited to handle a variety of practical situations. This single monochromator system provides the analyst with the reliability and performance our customers have come to expect in Shimadzu instruments.
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