L7
Double Beam UV VIS Spectrophotometer
● Advantage
Double beam optical system; 8 inch color touch-screen
Automatic zero and full scale adjustment
Equipped with USB interface
Optional : UV WIN8 Spectrum data processing software / Thermal plotter
● Main Features
Adopt blazed holographic gratings. Have outstanding test precision and very competitive price. Cutting-edge user interface,
powerful functions, and easy operation.
With powerful functions, the equipment shows great performance in qualitative and quantitative testing , such as :
◆ Full spectrum scanning ◆ Linear regression
◆ Detailed spectrum scanning ◆ Concentration direct reading
◆ Time-based kinetics determination ◆ Peak/Valley detecting
◆ Multi-wavelength measurement ◆ GOTO λ
● Specifications
Model | L7 |
| Cuvette Holder | Only 10mm |
| Photometry | Double Beam |
Monochromator type | Czerny-turner |
Focal length | 160mm |
| Grating | 1200 lines/mm |
| Detector | Silicon Photocell |
Band Width | 1.8nm |
Wavelength Setting | 8 inch color touch screen |
| Wavelength Range | 190-1100nm |
Wavelength Accuracy | ±0.5nm |
Wavelength Repeatability | ≤0.2nm |
| Scanning Speed | Fast-Medium-Slow |
| Stray Light | ≤0.03%T(at 220nm NaI, 360nm NaNO₂) |
Photometric Range | 0.0-200.0%T -0.301-4.000A 0.000-9999C |
Photometric Accuracy | ±0.3%T ±0.002Abs(0-0.5A) ±0.004Abs(0.5-1A) |
Photometric Repeatability | ≤0.15%T 0.001Abs(0-0.5A) 0.002Abs(0.5-1A) |
Baseline | ≤±0.002A(200-1090nm) |
Noise | 100%(T) noise≤0.15%(T), 0%(T) noise ≤0.1%(T) |
Drift | ≤0.0009Abs/30 min(250nm and 500nm after 2 hrs warm up |
Interface | USB |
Power Supply | AC 110-240V, 200W |
Package Size/Weight | 720x600x510mm, 32Kg |
Dimensions(W*D*H) | 74*63*45cm&35kg |
L8/L9
Double Beam UV VIS Spectrophotometer
The L8/L9 double beam uv vis spectrophotometer applies a new optical bench, with 5-speed adjustable bandwidth (L9 only), ARM chip
control and data processing,8 inch color touch - screen which displays menu and spectral curve and can analyze spectrum test data.
It’s quite easy for user and computer interaction.
The instrument can perform following operations, including photometry, automatic scanning spectral measurement, quantitative analysis,
dynamic analysis, and multi-wavelength measurement.
The instrument serves as the basic equipment for quality control, technical evaluation and scientific research, and can be widely used in
susceptibility testing,medicine and health, biochemistry, environmental monitoring, commodity inspection, petrochemical and other fields.
Main Features:
1.New optical platform, enabling the host machine with excellent optical properties, metering performance, low stray light and noise, high
metering accuracy and stability.
2. Unique system of deuterium and tungsten lamp installation, facilitating the light source to automatically switch to the best position, and
allowing users to operate the instrument,
replace the light source and maintain the instrument more conveniently , accurately and safely.
3. Sophisticated hardware and software design , empowering the instrument with powerful spectral data processing and storage
capabilities , and performing functions, including automatic scanning of measured spectrum,
multi-wavelength ( 1~3λ) measurement, kinetic measurement, 1~3 curve fitting, 1~4 derivative spectra,
spectra printing and storage and data analysis.
4.8-inch color touch screen, with a good user-machine interface, easy to operate.
5.USB Communication port.
Standard Accessories:
Main Machine 1 piece
Operation manual 1 piece
Quartz cuvette 1cm 2 pieces
Power cable 1 piece
Fuse 2piece
Optional Accessories:
UV WIN8 Spectrum data processing software
Specifications:
Model | L8 | L9 |
| Cuvette Holder | 10mm（standard）/50MMor100mm（Optional) | |
| Photometry | Double Beam | |
| Monochromator Type | Czerny-Turner | |
| Focal Length | 200mm | |
| Grating | 1600 lines/mm | |
| Detector | Silicon Photocell | |
Spectrum Bandwidth | 1nm or 2nm | 0.5nm, 1nm, 2nm, 4nm, 5nm |
| Wavelength Setting | 8 inch color touch screen | |
Wavelength Range | 190-1100nm | |
Wavelength Accuracy | ± 0.3nm | |
Wavelength Repeatability | ≤ 0.1nm | |
Scanning Speed | Fast-medium-slow | |
Light source Switching Wavelength | 340nm | |
Stray Light | ≤0.02%T (at 220nm NaI, 360nm NaNO₂) | |
Photometric Range
| 0.0 ~ 200.0% T -0.301 ~ 4.000A 0.000 to 9999C | |
Photometric Accuracy:
| ± 0.3% T ± 0.002Abs (0 - 0.5A) ± 0.004Abs (0.5 - 1A) | |
Photometric Repeatability:
| ≤ 0.15% T 0.001Abs (0 - 0.5A) 0.002Abs (0.5 - 1A) | |
Flatness | ≤ ± 0.0008A(200-1090nm) | |
Noise | 100%(T) noise ≤ 0.1% (T), 0% (T) noise ≤ 0.02% (T) | |
Drift | ≤0.004Abs/hr(250nm and 500nm after 2 hrs warm up | |
Power | AC 110-240V, 200W | |
Light Source | Hamamatsu D2 lamp, Osram halogen tungsten lamp | |
Interface | USB | |
Packing Size | 750mm*650mm*460mm, , 35kg. | |
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