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Lasany LI-2802 Double Beam UV-VIS Spectrophotometer for Scientific Testing and Research
The Lasany LI-2802 Double Beam Microprocessor UV-VIS Spectrophotometer is an analytical laboratory instrument designed for absorbance, transmittance, concentration and spectral measurements. Its double-beam optical system measures sample and reference signals to support reliable analytical workflows in scientific research, professional testing and laboratory quality control.
The LI-2802 Regular model features an eight-cell holder and a wavelength range of 190 nm to 1100 nm. It supports a range of measurement functions, including quantitative analysis, wavelength scanning, kinetics and DNA/protein testing. These capabilities make it suitable for pharmaceutical laboratories, chemical research, educational institutions, environmental analysis and other laboratories using appropriate UV-VIS analytical methods.
Key Features
- Double-Beam Optical System: Measures sample and reference signals to support measurement stability.
- Wide Wavelength Range: Covers 190–1100 nm for ultraviolet and visible-light analysis.
- Eight-Cell Holder: Accommodates multiple sample cells for laboratory testing workflows.
- Quantitative Analysis: Supports coefficient-based calculations and standard-curve analysis.
- DNA and Protein Testing: Provides calculations based on UV absorbance ratios for suitable samples.
- Kinetics Measurement: Supports time-based absorbance monitoring and reaction-rate analysis.
- Wavelength Scanning: Helps examine spectral characteristics across selected wavelengths.
- Multi-Wavelength Analysis: Supports measurement at selected wavelengths and additional analytical modes.
- Computer Connectivity: USB connectivity supports data transfer; a parallel printer interface is listed in the regular-model brochure.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Lasany |
| Model Number | LI-2802 Regular |
| Product Type | Double Beam Microprocessor UV-VIS Spectrophotometer |
| Optical System | Double beam |
| Grating | 1200 lines/mm |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 1 nm |
| Wavelength Accuracy | ±0.1 nm at 656.1 nm; ±0.3 nm across the full wavelength range, as listed in the regular-model brochure |
| Wavelength Repeatability | 0.1 nm |
| Photometric Accuracy | ±0.3% T over 0–100% T |
| Photometric Range | -3 A to +3 A |
| Photometric Modes | Absorbance (A), Transmittance (T), Concentration (C) |
| Light Sources | Deuterium lamp and tungsten lamp |
| Detector | Silicon photodiode |
| Scanning Speed | Fast, medium and slow |
| Wavelength Setting | Automatic wavelength setting, as listed in the brochure |
| Cell Holder | Automatic eight-cell holder |
| Connectivity | USB port and parallel printer port |
| Power Supply | AC 220 V / 50 Hz or AC 110 V / 60 Hz, as specified in the brochure |
| Dimensions | 590 × 460 × 220 mm |
| Weight | Approximately 25 kg |
Scientific Research and Testing Applications
- Pharmaceutical Analysis: Supports suitable spectrophotometric assays and quality control procedures.
- Biochemical Research: Supports appropriate DNA, protein and other UV-VIS analytical workflows.
- Chemical Laboratories: Helps measure absorbance and estimate concentration using calibrated analytical methods.
- Environmental Testing: Can be used for compatible water and environmental sample analysis.
- Food and Beverage Laboratories: Supports suitable spectrophotometric testing and quality assessment.
- Educational Institutions: Useful for spectroscopy practicals, demonstrations and scientific projects.
- Industrial Quality Control: Supports routine analysis of suitable materials and samples.
Benefits for Laboratory Workflows
The double-beam optical design supports sample-reference comparison, while the eight-cell holder helps accommodate multiple samples during testing. Quantitative analysis, wavelength scanning and kinetics functions support different analytical procedures. DNA/protein calculations and computer connectivity can assist with research and data-handling tasks when used with appropriate methods and compatible software.
Important Product Configuration Notes
- This description is based on the manufacturer’s LI-2802 Regular model with an eight-cell holder.
- The LI-2802 Exclusive and Peltier/sipper configurations have different features and may have different specifications.
- Confirm the supplied software, USB cable, cell holders, glass cells, quartz cells and other accessories before publishing package contents.
- Verify power requirements and technical specifications against the exact unit being supplied.
- Use appropriate calibration standards and validated laboratory procedures for reliable results.
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Lasany LI-2802 Double Beam UV-VIS Spectrophotometer with Eight-Cell Holder for Scientific Research, Laboratory Testing and Quality Control
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