Double Beam UV-Vis Spectrophotometer LUS-B20 is a double beam designed UV-Vis spectrophotometer, offers 190 to 1100 nm of wavelength range with C-T monochromator and 1600 L/mm holographic grating. Features 3D spectrogram measurement for sample with dynamic change, this spectrophotometer has adjustable spectral bandwidth of 1.0 nm to 5.0 nm. Designed compactly with fixed 2 trench sample holder, deuterium and tungsten lamp as light source, it has automatic calibration. Equipped with photomultiplier sensor, digital signal and USB interface, 4 quartz cuvette, this spectrophotometer provides high resolution, low stray light, lasting stability, and powerful software function.
| Wavelength range | 190 to 1100 nm |
| Spectral bandwidth | 1.0 to 5.0 nm (adjustable) |
| Optical system | Double beam, C-T monochromator, 1600 L/mm holographic grating |
| Wavelength accuracy | ±0.3 nm |
| Wavelength repeatability | 0.1 nm |
| Wavelength resolution | 0.05 nm |
| Wavelength edge noise | 100%T line ≤0.1%T;0%T line ≤0.05%T |
| Stray light | 0.015 %T (at 220nm and 360 nm) |
| Baseline flatness | ≤±0.001 Abs |
| Baseline noise | ±0.1 %T |
| Baseline drift | ≤0.0004 Abs / h (after warm-up at 500 nm) |
| Standard sample holder | Fixed 2 trench sample holder |
| Measuring length | 0 to 200% T, -4.000 to 4.000 Abs, -9999 to 9999C, -9999 to 9999F |
| Transmittance accuracy | ±0.3 %T |
| Transmittance repeatability | 0.1 % T |
| Light switching point | Adjustable; 294 nm to 365 nm |
| Light Source | Deuterium lamp, Tungsten lamp (20 W/12 V) |
| Detector | Silicon photodiode detector |
| Interface | Digital signal; USB |
| Cuvette | 4 quartz cuvette; 10 mm optical path |
| Power supply | 220 V ± 10%, 50Hz |
| Power | 200 W |
| Dimension (L×W×H) | 620×510×245 mm |
| Package dimension (L×W×H) | 745×635×400 mm |
| Net weight | 30 kg |
| Gross weight | 39 kg |
Our range of Double Beam UV/VIS spectrophotometers offer long optical path which ensure high accuracy and stability. Its design measures the transmittance of the sample and solvent simultaneously. It is highly precise and performs powerful analysis.




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