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| Company | JASCO | JASCO | JASCO | JASCO | JASCO |
| Item | V-730 UV-Visible Spectrophotometer | CPL-300 Circularly Polarized Luminescence Spectrophotometer | J-1500 Circular Dichroism Spectrophotometer | V-750 UV-Visible Spectrophotometer | V-770 UV-Vis/NIR Spectrophotometer |
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| Catalog Number | V-730 | CPL-300 | J-1500 | V-750 | V-770 |
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| Type | UV-Visible | Circularly Polarized Luminescence | Circular Dichroism | UV-Visible | UV-Visible/NIR |
| Wavelength Range | 190 to 1,100 nm | 250 to 850 nm (Optional: 400 to 1,100 nm with PMT detector) | J-1500: 163 to 950 nm (Option: 163 to 1600 nm) | 190 to 900 nm | 190 to 2,700 nm (3,200 nm, option) |
| Wavelength Accuracy | ±0.2 nm (at 656.1 nm) | Inquire | Inquire | ±0.2 nm (at 656.1 nm) | ±0.3 nm (at 656.1 nm)
± 1.5 nm (at 1312.2 nm) |
| Scanning Speed | 10 to 8,000 nm/min | up to 10,000 nm/min | up to 10,000 nm/min | 10 to 4,000 nm/min (8,000 nm/min in preview mode) | 10 to 4,000 nm/min (8,000 nm/min in preview mode) |
| Spectral Bandwidth | 1.0 nm fixed | Inquire | 0.01 to 16 nm | 0.1, 0.2, 0.5, 1, 2, 5, 10 nm
L2, L5, L10 nm (low stray light mode)
M1, M2 nm (micro cell mode) | UV-Vis:
0.1, 0.2, 0.5, 1, 2, 5, 10 nm
L2, L5, L10 nm (low stray light mode)
M1, M2 nm (micro cell mode)
NIR:
0.4, 0.8, 1, 2, 4, 8, 20, 40
L8, L20, L40 nm (low stray light mode)
M4, M8 nm (micro cell mode) |
| Optical System | Rowland off-circle arrangement
Single monochromator
Double beam type | Double prism monochromators for both excitation and emission optics / Piezoelastic modulator / Lock-in amplifier | Double-prism polarizing monochromator / J-1700: Double-prism polarizing monochromator and grating monochromator | Czerny-Turner mount
Double monochromator
Fully symmetrical double beam type | Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type |
| Light Source | Halogen lamp, Deuterium lamp | 150W Ozone-free air-cooled Xe lamp (Option: 150W air-cooled HgXe lamp) | 150W air-cooled Xe lamp or 450W water-cooled Xe lamp | Halogen lamp, Deuterium lamp | Halogen lamp, Deuterium lamp |
| Resolution | =BS8 | Wavelength Resolution: 0.025 nm
CPL Resolution: 0.00001 mdeg | Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg | =BS9 | =BS11 |
| 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 CPL-300 Circularly Polarized Luminescence Spectrophotometer supplements the information obtained from other chiroptical techniques such as electronic or vibrational circular dichroism. Circular dichroism (CD) spectroscopy is widely used in the study of optically active substances. CD The CPL-300 Circularly Polarized Luminescence Spectrophotometer supplements the information obtained from other chiroptical techniques such as electronic or vibrational circular dichroism. Circular dichroism (CD) spectroscopy is widely used in the study of optically active substances. CD spectroscopy provides information about the structure of optically active substances in the electronic ground state, however, CPL spectroscopy provides information about excited states. The two techniques are therefore complimentary.
The CPL-300 uses the original 180° fluorescence collection approach proposed by Steinberg. The standard ozone-free 150W Xe lamp can be user-replaced with an Hg/Xe source. The instrument’s unique double-prism excitation and emission monochromators offer very low stray-light and no spurious linear polarization effects caused by instruments that use diffraction gratings. These are both extremely important as CPL signals tend to be very weak.... Read More | The J-1000 Series Circular Dichroism spectrophotometers are specifically designed for high sensitivity measurements in the near- and far-UV regions, for scientists that need confidence in the data from characterization studies of biomolecule structure, function, and stability under a wide variety ofThe J-1000 Series Circular Dichroism spectrophotometers are specifically designed for high sensitivity measurements in the near- and far-UV regions, for scientists that need confidence in the data from characterization studies of biomolecule structure, function, and stability under a wide variety of experimental conditions.
The J-1500 allows for the maximum flexibility to upgrade your CD system with different measurement techniques. While the standard measurement modes are CD, LD, and absorbance, up to four simultaneous modes can be measured when combined with a wide range of sampling accessories.
These accessories can measure a variety of samples, from liquids to films to solid-states. Temperature control systems can be coupled with multi-position cells to run thermal melts, providing researchers with CD and thermodynamic data sets for conformational and folding studies. Automated high-throughput CD can obtain measurements on up to 192 samples without user intervention, saving both time and money. Kinetic and protein dynamics studies can be performed with our dedicated stopped-flow systems that can measure both CD and fluorescence.
The wavelength range has also been significantly extended, allowing measurements to be obtained in both the vacuum-UV and NIR spectral regions using the standard PMT detector (163 to 950 nm) and an optional InGaAs detector (up to 1,600 nm). Additional features now allow researchers to optimize their parameter specifications in order to obtain data with the highest resolution and S/N performance for a specific application set.... 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-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. |
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