When light strikes matter, one of three outcomes will occur: It will be absorbed, reflected or transmitted. Ultraviolet or UV spectrophotometry is a type of absorption spectroscopy which is used to measure the absorbance of light across the ultraviolet ranges of the electromagnetic spectrum. UV spectrophotometers are relied upon in numerous disciplines including analytical chemistry, forensics, DNA and RNA-related work, pharmaceuticals, biology, environmental sciences and more.
Before choosing a spectrophotometer, however, purchasers should consider three aspects: range of the detection wavelength, working absorbance range, and measurement time. Other considerations include lab requirements and total costs.
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| Company | JASCO | JASCO | JASCO | JASCO | JASCO |
| Item | V-730 UV-Visible Spectrophotometer | V-750 UV-Visible Spectrophotometer | V-760 UV-Visible Spectrophotometer | V-770 UV-Vis/NIR Spectrophotometer | V-780 UV-Vis/NIR Spectrophotometer |
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| Catalog Number | V-730 | V-750 | V-760 | V-770 | V-780 |
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| Wavelength Range | 190 to 1,100 nm | 190 to 900 nm | 187 to 900 nm | 190 to 2,700 nm (3,200 nm, option) | 190 to 1,600 nm |
| Resolution | =BS8 | =BS9 | =BS10 | =BS11 | =BS12 |
| Optical System | Rowland off-circle arrangement
Single monochromator
Double beam type | Czerny-Turner mount
Double monochromator
Fully symmetrical double beam type | Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type | Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type | Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type |
| Wavelength Accuracy | ±0.2 nm (at 656.1 nm) | ±0.2 nm (at 656.1 nm) | ±0.1 nm (at 656.1 nm) | ±0.3 nm (at 656.1 nm)
± 1.5 nm (at 1312.2 nm) | ±0.3 nm (at 656.1 nm)
± 1.0 nm (at 1312.2 nm) |
| Description | The V-730 UV-Visible Spectrophotometer is designed for accurate and reliable absorption and transmittance measurements. Innovative features include IQ Accessory automatic recognition and IQ Start for push-button operation of routine measurements. The wide wavelength range from 190 to 1,100 nm The V-730 UV-Visible Spectrophotometer is designed for accurate and reliable absorption and transmittance measurements. Innovative features include IQ Accessory automatic recognition and IQ Start for push-button operation of routine measurements. The wide wavelength range from 190 to 1,100 nm offers versatile measurement for many different applications. Spectra Manager™ Suite*, the latest innovative, cross-platform spectroscopy software, or the iRM, a handheld controller with color LCD touch screen, both provide full system control and advanced data processing.
*Spectra Manager™ CFR (for 21 CFR part 11 compliance) is available as an option.... Read More | The V-750 UV-Visible Spectrophotometer optical design uses precision double-beam optics with variable spectral bandwidth. A high sensitivity PMT detector provides accurate and reproducible measurements for low to high concentration samples. By controlling the high voltage applied to the PMT, the The V-750 UV-Visible Spectrophotometer optical design uses precision double-beam optics with variable spectral bandwidth. A high sensitivity PMT detector provides accurate and reproducible measurements for low to high concentration samples. By controlling the high voltage applied to the PMT, the dynode feedback offers a wider dynamic range than is generally found on uv-visible spectrophotometers. For high resolution measurements, such as gas and vapor phase spectroscopy, the spectral bandwidth can be set as narrow as 0.1 nm. Special low stray light slit settings which optimize the light image on the monochromator provide increased linearity to up to 5 absorbance units.... Read More | The V-760 UV-Visible Spectrophotometer includes a double monochromator for exceptional resolution with extremely low stray light (0.00008 %) for more accurate measurement over the widest photometric range (up to 8AU). The V-760 provides excellent sensitivity for diffuse reflectance or transmittance The V-760 UV-Visible Spectrophotometer includes a double monochromator for exceptional resolution with extremely low stray light (0.00008 %) for more accurate measurement over the widest photometric range (up to 8AU). The V-760 provides excellent sensitivity for diffuse reflectance or transmittance of solid and liquid samples using an integrating sphere. For high resolution measurements, such as gas and vapor phase spectroscopy, the spectral bandwidth can be set as narrow as 0.1 nm. Extended photometric linearity up to 8 Abs enables measurement of highly absorbing samples and is also useful for measurements of optical material with transmission characteristics that approach 0% T.... Read More | The V-770 UV-Visible/NIR Spectrophotometer features a unique single monochromator design for maximum light throughput with excellent absorbance linearity. A PMT detector is used for the UV to visible region and a Peltier-cooled PbS detector for the NIR region. | The V-780 UV-Visible/NIR Spectrophotometer features a single monochromator with automatically exchanged gratings: 1,200 lines/mm for the UV-Visible region and 600 lines/mm for the NIR region. A PMT detector is used for the UV-Visible region and a high sensitivity InGaAs detector in the NIR region. The V-780 UV-Visible/NIR Spectrophotometer features a single monochromator with automatically exchanged gratings: 1,200 lines/mm for the UV-Visible region and 600 lines/mm for the NIR region. A PMT detector is used for the UV-Visible region and a high sensitivity InGaAs detector in the NIR region. Both gratings and detectors are automatically exchanged within a user selectable range of 800 to 900 nm.... Read More |
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