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Lasany LI-285 Microprocessor Single Beam UV-VIS Spectrophotometer for Research and Laboratory Testing
The Lasany LI-285 Microprocessor Single Beam UV-VIS Spectrophotometer is an analytical laboratory instrument designed for measuring absorbance, transmittance and concentration in scientific research, quality control and routine testing applications. Its single-beam optical system and CT grating monochromator support UV-visible spectral measurements across a wavelength range of 195–1020 nm.
Designed for laboratory professionals, research institutions, pharmaceutical facilities, educational laboratories and industrial testing environments, the LI-285 provides microprocessor-based operation, automatic zero setting and a four-mode LCD display. Its measurement functions make it suitable for routine quantitative analysis and sample testing across a variety of laboratory workflows.
The instrument supports computer connectivity through an RS-232 interface. The manufacturer’s published product information lists software and an RS-232 cable among the standard accessories, helping laboratories manage measurement data through a compatible computer setup.
Key Features of Lasany LI-285
- Single-Beam Optical System: Designed for routine UV-visible spectrophotometric measurements in laboratory environments.
- Wide Wavelength Range: Covers 195–1020 nm for a variety of ultraviolet and visible light analysis applications.
- CT Grating Monochromator: Supports wavelength selection for analytical measurements.
- Microprocessor Control: Provides electronic control for convenient instrument operation.
- Multiple Measurement Modes: Supports transmittance (T), absorbance (A) and concentration (C) measurements.
- Automatic Zero Setting: Helps simplify instrument preparation before taking measurements.
- Four-Mode LCD Display: Provides a digital interface for viewing measurement information.
- Computer Connectivity: RS-232 interface with software listed in the manufacturer’s standard configuration.
- Laboratory Applications: Suitable for research, educational, pharmaceutical, environmental and industrial testing laboratories.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Lasany |
| Model | LI-285 |
| Instrument Type | Microprocessor Single Beam UV-VIS Spectrophotometer |
| Optical System | Single beam |
| Monochromator | CT grating monochromator |
| Wavelength Range | 195–1020 nm |
| Spectral Bandwidth | 2 nm |
| Wavelength Accuracy | ±2 nm |
| Wavelength Repeatability | ≤1 nm |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ±0.3% T |
| Photometric Range | -0.3 to 3 A / 0–200% T |
| Stray Light | ≤0.3% T at 220 nm |
| Stability | 0.004 A/h at 500 nm |
| Measurement Modes | Transmittance, Absorbance and Concentration |
| Zero Setting | Automatic |
| Display | LCD, four display modes |
| Data Interface | RS-232 |
| Computer Software | Listed as included by the manufacturer |
| Approximate Weight | 12 kg |
Standard Accessories
The manufacturer’s published configuration lists the following accessories:
- Main instrument
- Software
- RS-232 communication cable
- Glass cell accessory kit
- Two quartz cells
- Power cable
- Operating manual
- Software manual and CD
Note: Confirm the final accessory list and software compatibility with the supplier before ordering.
Applications of Lasany LI-285
- Pharmaceutical and medical laboratory analysis
- Scientific research and analytical testing
- Environmental monitoring and water quality analysis
- Food and beverage testing
- Agricultural chemistry and sample analysis
- Educational laboratories, colleges and universities
- Industrial quality control and commodity inspection
- Petrochemical testing
- Metallurgy and geological laboratory applications
Benefits for Research and Testing Laboratories
The Lasany LI-285 combines UV-visible measurement capability, microprocessor-based controls and multiple measurement modes in a benchtop laboratory instrument. Automatic zero setting and a digital display help simplify routine operation, while the RS-232 connection provides a route for computer-based data handling with compatible software.
Its broad wavelength range and application versatility make it a practical option for laboratories carrying out routine absorbance, transmittance and concentration measurements. Suitability for a particular test depends on the sample, analytical method and required measurement performance.
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Lasany LI-285 Microprocessor Single Beam UV-VIS Spectrophotometer for Laboratory Research and Testing
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