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.
Find, compare, and request a quote for spectrophotometers across leading suppliers at Labcompare; including access to product citations, related published figures, and first-hand reviews from our scientific community.
|  |  |
| Company | JASCO | JASCO |
| Item | V-780 UV-Vis/NIR Spectrophotometer | J-1100 Circular Dichroism Spectrophotometer |
| Citations | | |
| Catalog Number | V-780 | J-1100 |
| Price | | |
| Type | UV-Visible/NIR | Circular Dichroism |
| Wavelength Range | 190 to 1,600 nm | 180 to 600 nm |
| Wavelength Accuracy | ±0.3 nm (at 656.1 nm)
± 1.0 nm (at 1312.2 nm) | Inquire |
| Scanning Speed | 10 to 4,000 nm/min (80,00 nm/min in preview mode) | up to 5,000 nm/min |
| Spectral Bandwidth | 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) | 1 nm |
| Optical System | Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type | Double-prism polarizing monochromator / J-1700: Double-prism polarizing monochromator and grating monochromator |
| Light Source | Halogen lamp, Deuterium lamp | 150W air-cooled Xe lamp |
| Resolution | =BS12 | Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg |
| Description | 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 | 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 |
| Quantity | EA | EA |
| Get Quote | | |