Spectrophotometers - Page 28

Manufacturer: Thermo Scientific Brand: UV-Vis Model: 840-208100

The Thermo Scientific 840-208100 Genesys 10S UV/Vis spectrophotometer has a 190 to 1100mn wavelength range, 1.8nm bandwidth, and a xenon flash lamp, and is used for applications in quality control, reaction monitoring, and colorimetric and life science analysis. Preprogrammed and configurable methods include wavelength scanning at up to 4,200nm/minute, absorbance ration and absorbance difference measurements, quantitative analysis with up to 15 standards and five calibration curve fits, and multiple fixed measurements at up to 31 wavelengths. The performance verification report includes time, date, and instrument serial number to conform to GLP/GMP and regulatory compliance. The 1.8nm bandwidth provides lower detection limits and improved signal-to-noise performance. The xenon lamp provides an internal standard for wavelength accuracy verification, and the xenon flash lamp and beam splitter provide real-time reference beam correction with each lamp flash. The integrated six-cell charger increases sample throughput. The graphical display has an LCD backlight to ease reading. A standard curve screen provides concentration method set-up, and built-in test methods perform stay light, noise, and resolution analysis. A sealed keypad protects the instrument from spills. SpecificationsBeam geometryDual-beam monochromatorWavelength range190 to 1100nmPhotometric rangeUp to 3.5A at 260nmWavelength accuracy+ or - 1.0nmWavelength reproducibility+ or - 0.5nmSpectral bandwidth1.8nmLight sourceXenon flash lampDetectorDual silicon photodiodesPreprogrammed methodsFive curve-fit options, 15 standards, and up to 10 pre-programmed measurement unitsData exportTwo USB-A ports, USB-B portDimensions 9.8 x 11.8 x 15.7 inches/ 25 x 30 x 40cm (H x W x D)Power requirements 100/240VAC, 50/60Hz, auto-detectingH is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. A spectrophotometer is a device used to measure and analy...

Manufacturer: Shimadzu Brand: Shimadzu Model: 206-24000-92

The Shimadzu 206-24000-92 UVmini-1240 single-beam spectrophotometer has a 190 to 1100nm wavelength range, a 5nm spectral bandwidth, and halogen and deuterium lighting, and is used to perform photometric analysis, spectrum measurements, and quantitation. The single-beam monochromator incorporates an aberration-correcting concave blazed holographic grating. The instrument has one-point calibration curve with one standard sample and a point through the origin; multi-point calibration curve for applications requiring various standards; and first-, second-, and third-order polynomial fitting for the calibration come standard. Photometric measurements include T% and ABS fixed-wavelength measurements and quantitation with K-factor method. Spectrum measurements have ABS, T%, and E measuring modes with a choice of scan speed and scan times. The spectrum display can be set to overlay or sequential. Quantitation can be performed using one, two, or three wavelengths, with one to ten repetitions and mean value. Selectable quantitative methods include K-factor, one point, or multi-point calibration curves. The 5nm bandwidth provides more consistent results for low-concentration samples than does 1nm. The halogen and deuterium lamps can be manually selected or set to automatically change with the wavelength. The light source auto-adjusts for maximum sensitivity. The 6" LCD has CFD lighting and contrast adjustment for viewing in a range of lighting. An RS-232 port provides data export to a computer (sold separately).SpecificationsMeasurement methodSingle-beam monochromatorWavelength range190 to 1100nmSpectral bandwidth5nmAbsorbance range-0.3 to 3.0AAbsorbance light sourceHalogen and deuteriumDetectorSilicon photodiodeComputer interfaceRS-232 portDimensions274 x 416 x 379mmPower requirements 100-120VAC, 50/60HzH is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to backA spectrophotometer is a device used to meas...