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| Company | JASCO | JASCO | JASCO | JASCO | JASCO |
| Item | J-1700 Circular Dichroism Spectrophotometer | CPL-300 Circularly Polarized Luminescence Spectrophotometer | J-1100 Circular Dichroism Spectrophotometer | V-730 UV-Visible Spectrophotometer | V-770 UV-Vis/NIR Spectrophotometer |
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| Catalog Number | J-1700 | CPL-300 | J-1100 | V-730 | V-770 |
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| Type | Circular Dichroism | Circularly Polarized Luminescence | Circular Dichroism | UV-Visible | 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) | 180 to 600 nm | 190 to 1,100 nm | 190 to 2,700 nm (3,200 nm, option) |
| Wavelength Accuracy | Inquire | 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 | up to 10,000 nm/min | up to 10,000 nm/min | up to 5,000 nm/min | 10 to 8,000 nm/min | 10 to 4,000 nm/min (8,000 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 | 1 nm | 1.0 nm fixed | 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 | Double-prism polarizing monochromator and grating monochromator | 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 | Rowland off-circle arrangement
Single monochromator
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) | 150W air-cooled Xe 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 | Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg | =BS8 | =BS11 |
| 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 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-1100 Circular Dichroism spectrophotometer is a compact, general-purpose space-saving design. This simple yet powerful instrument is perfect for users looking to obtain more routine CD measurements in both industry and academia.
The J-1100 uses simple optimized parameters so that a wide range of users with different levels of CD knowledge can get right down to work and successfully obtain high quality data. The wavelength range from 180 to 600 nm is suitable for obtaining secondary and tertiary structure measurements in the near- and far-UV. When fitted with a Peltier cell holder, the J-1100 be used for measurement of CD, LD and absorbance as a function of wavelength, temperature, and time.... Read More | 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-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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