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| Company | JASCO | JASCO | JASCO | JASCO | JASCO |
| Item | J-1700 Circular Dichroism Spectrophotometer | CPL-300 Circularly Polarized Luminescence Spectrophotometer | V-760 UV-Visible Spectrophotometer | V-770 UV-Vis/NIR Spectrophotometer | V-780 UV-Vis/NIR Spectrophotometer |
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| Catalog Number | J-1700 | CPL-300 | V-760 | V-770 | V-780 |
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| Type | Circular Dichroism | Circularly Polarized Luminescence | UV-Visible | UV-Visible/NIR | UV-Visible/NIR |
| Wavelength Range | 163 to 2500 nm (Option: 163 to 950 nm (PMT) / Option: 900 to 2500 nm (InGaAs) | 250 to 850 nm (Optional: 400 to 1,100 nm with PMT detector) | 187 to 900 nm | 190 to 2,700 nm (3,200 nm, option) | 190 to 1,600 nm |
| Wavelength Accuracy | Inquire | Inquire | ±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) |
| Scanning Speed | 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) | 10 to 4,000 nm/min (80,00 nm/min in preview mode) |
| Spectral Bandwidth | 0.01 to 16 nm (163 to 950 nm) / 5, 10, 20, 30, 40, 50 nm (950 to 2,500 nm) | Inquire | 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) | 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:
0.2, 0.4, 0.5, 1, 2, 4, 10, 20
L4, L10, L20 nm (low stray light mode)
M2, M4 nm (micro cell mode) |
| Optical System | Double-prism polarizing monochromator and grating monochromator | Double prism monochromators for both excitation and emission optics / Piezoelastic modulator / Lock-in amplifier | 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 |
| Light Source | 150W air-cooled Xe lamp or 450W water-cooled Xe lamp | 150W Ozone-free air-cooled Xe lamp (Option: 150W air-cooled HgXe lamp) | Halogen lamp, Deuterium lamp | Halogen lamp, Deuterium lamp | Halogen lamp, Deuterium lamp |
| Resolution | Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg | Wavelength Resolution: 0.025 nm
CPL Resolution: 0.00001 mdeg | =BS10 | =BS11 | =BS12 |
| Description | 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-1700 was specifically designed for more demanding near-infrared CD applications. In addition to the enhanced far-UV capabilities, researchers probing the chiral activity of molecules in the NIR spectral region now have the ability to obtain data at wavelengths up to 2,500 nm. The InGaAs detector has a wavelength range from 900 to 2,500 nm, while the PMT ranges from 163 to 960 nm. The automatic detector interchange allows researchers to obtain both far-UV and NIR measurements without having to manually switch detectors. The addition of a grating monochromator to the double-prism monochromator setup provides low stray light and high light intensity, generating CD signals with high S/N performance throughout a large spectral range.... 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 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 |
| Quantity | EA | EA | EA | EA | EA |
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