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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| Company | Mettler-Toledo GmbH | Mettler-Toledo GmbH | Mettler-Toledo GmbH |
| Item | Excellence UV5 Spectrophotometer | Excellence UV5Nano Spectrophotometer | Excellence UV7 Spectrophotometer |
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| Type | UV/VIS | Micro-Volume UV/VIS | UV/VIS |
| Wavelength Range | 190 to 1,100 nm | 190 to 1,100 nm | 190 to 1,100 nm |
| Wavelength Accuracy | ±1.0 nm | ±1.0 nm | ±0.8 nm |
| Scanning Speed | Minimal scan time at full range is 1 sec. | Minimal scan time at full range is 1 sec. | Minimal scan time at full range is 1 sec. |
| Optical System | CCD array detector | CCD array detector | CCD array detector |
| Light Source | Pulsed Xenon flash lamp | Pulsed Xenon flash lamp | Pulsed Xenon flash lamp |
| Resolution | > 1.5 (toluene in hexane abs.) | > 1.7 (toluene in hexane abs.) | > 1.9 (toluene in hexane abs.) |
| Description | The Excellence UV5 Spectrophotometer comes ready-to-use with a 7-inch touchscreen terminal and a precision 1 cm cuvette holder. Three direct measurement types (fixed wavelength, scan, quantification) have been pre-installed. FastTrack™ technology allows full spectrum scans from 190 – 1100 nm in 1 The Excellence UV5 Spectrophotometer comes ready-to-use with a 7-inch touchscreen terminal and a precision 1 cm cuvette holder. Three direct measurement types (fixed wavelength, scan, quantification) have been pre-installed. FastTrack™ technology allows full spectrum scans from 190 – 1100 nm in 1 second. It is available in two versions: UV5 includes the precision 1 cm cuvette holder and the UV5 A includes the 8-position CuvetteChanger for automated UV/VIS measurements.... Read More | The Excellence UV5Nano Spectrophotometer allows micro-volume measurements with only 1 µL of sample, as well as standard cuvette applications. LockPath™ technology secures pathlength accuracy and repeatability. It comes with a wide range of pre-defined direct measurement applications and METTLER The Excellence UV5Nano Spectrophotometer allows micro-volume measurements with only 1 µL of sample, as well as standard cuvette applications. LockPath™ technology secures pathlength accuracy and repeatability. It comes with a wide range of pre-defined direct measurement applications and METTLER TOLEDO methods typically used in Life Sciences (biotech and biopharma), e.g. nucleic acid and protein analyses.... Read More | The Excellence UV7 Spectrophotometer's optical performance fully complies with Pharmacopeia requirements concerning photometric and wavelength accuracy, resolution and stray light. The UV7 comes with four pre-defined direct measurement types and METTLER TOLEDO methods. The method editor allows The Excellence UV7 Spectrophotometer's optical performance fully complies with Pharmacopeia requirements concerning photometric and wavelength accuracy, resolution and stray light. The UV7 comes with four pre-defined direct measurement types and METTLER TOLEDO methods. The method editor allows specific adaptation of the spectroscopic workflow.... Read More |
| Quantity | EA | EA | EA |
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