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, ARM chip control, and data processing, an 8-inch color touch-screen that displays a menu, and spectral curve, and can analyze spectrum test data.The instrument can perform the 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.
- 190–1100 nm
- ±0.3 nm Accuracy
- ≤0.02%T Stray Light
Features of L8/L9 Double Beam UV-VIS Spectrophotometer
- Advanced Optical Platform with low stray light, low noise, high accuracy and stable performance.
- Automatic D2/Tungsten Lamp Switching with convenient light-source replacement and maintenance.
- Powerful Spectral Analysis including auto scanning, 1–3 λ multi-wavelength, kinetic measurement, 1–3 curve fitting and 1–4 derivative spectra.
- Spectrum Printing, Storage & Data Analysis for complete result management.
- 8-Inch Color Touchscreen + USB Port for intuitive operation and PC connectivity.
Optical System of L8 L9 UV/Visible Spectrophotometer
Applications of L8/L9 Double Beam UV-VIS Spectrophotometer
The series of instruments can do quantitative and qualitative analysis for sample substance within the UV and visible spectral range. They are suited to wide applications in pharmaceutical manufacturing, health, clinic test, biochemistry, petrochemical industry, environmental protection, food safety and quality control. Besides, they can be used for the educational purpose, such as demonstration in class or serve as the common analysis instruments at physical or chemical laboratories in institutes or universities.
Education & Teaching Laboratories
Widely used in teaching laboratories for demonstrating Beer-Lambert Law, calibration curves, and basic qualitative and quantitative analysis of colored solutions.
Chemical & Industrial Process Control
Measuring absorbance-based color intensity and tracking reaction kinetics in dyes, coatings, inks, and electroplating solutions for routine industrial quality control.
Pharmaceutical & Biotech Quality Control
Used for quantitative analysis of APIs and finished products with visible absorbance, dissolution testing, and optional basic DNA/protein quantification and reaction kinetics monitoring via PC software.
Water & Environmental Analysis
Used for routine colorimetric determination of ammonia nitrogen, total phosphorus, Cr⁶⁺, nitrite, and volatile phenols in environmental water quality monitoring.
Food & Agricultural Quality Control
For colorimetric detection of nitrite, nitrate, phosphate, peroxide value, and pigments in food and agricultural products for quality control compliance.
Main Functions of L8 L9 UV/Visible Spectrophotometer
Automatic control
- Power on self-test of working status and automatic wavelength calibration;
- Automatic wavelength positioning;
- Automatic filters switching;
- Display and printing of spectrum and data;
- Error message indication;
- Drawing and printing of spectrum graph and data;
- Automatic searching of optimal energy point of light source.
Analyzing, testing, and information processing
- Photometric measurement;
- Spectrum scanning;
- Quantitative analysis;
- Multi-wavelength determination;
- Chemical kinetics measurement;
- Zoom in/out of spectrum graph, saving and recalling of curve;
- Calibration, search and printing of peak value.
L8/L9 Double Beam UV-VIS Spectrophotometer Display
FAQ
Specifications of L8/L9 Double Beam UV-VIS Spectrophotometer
| Model | L8/L9 |
| Product name | Double Beam UV-VIS Spectrophotometer |
| Photometry | Double Beam |
| Monochromator Type | Czerny-Turner |
| Focal Length | 200mm |
| Grating | 1600 lines/mm |
| Detector | Silicon Photocell |
| Spectrum Bandwidth | 2nm |
| Wavelength Setting | 8-inch color touch-screen |
| Wavelength Range | 190-1100nm |
| Wavelength Accuracy | ±0.3nm（actual test ±0.2nm ） |
| Wavelength Repeatability | ≤0.1nm |
| Scanning Speed | Fast-Medium-Slow |
| Stray Light | ≤0.02%T( at 220nm NaI, 360nm NaNo2 ) |
| Photometric Range | 0.0-200.0% T-0.301-4.000 A0.000-9999 C |
| Photometric Accuracy | ±0.3% T±0.002 Abs (0-0.5A)±0.004 Abs (0.5-1A) |
| Photometric Repeatability | ≤0.15% T0.001 Abs (0-0.5A)0.002 Abs (0.5-1A) |
| Baseline | ≤±0.0008 A(200-1090nm) |
| Noise | 100%（T）noise≤0.1%(T), 0%（T）noise≤0.02%(T) |
| Drifting | ≤0.004 Abs/h (250nm and 500nm after 2h warm up) |
| COM Port | USB |
| Light Source | Hamamatsu D2 lamp，Osram halogen tungsten lamp |
| Power | AC220V±22V 50Hz±1Hz, 200W |
| Packaging Size | 730mm X 630mm X 450mm 0.21M3 42.5kg |
Accessories of L8/L9 Double Beam UV-VIS Spectrophotometer
Standard Accessories
- Operation manual 1pc
- Glass cuvette 10mm 4pcs
- Quartz cuvette 10mm 2pcs
- Power cable 1pc
- Fuse 2pcs
- Cuvette holder 10mm
Optional Accessories
- UV WIN8 station pro software
- Cuvette holder 50mm 100mm
- Cuvette 20mm 30mm 50mm 100mm
Why Choose Us?
One-Station Shopping
“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem.
Customer-centric Services
User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country.
Online Support
To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.
100% Quality Guarantee
1-year free warranty includes repairing damaged parts and replacing selected ones (shipping extra). 5% is charged to extend it before it expires.
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