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Lasany LI-294 Microprocessor Single Beam UV-VIS Spectrophotometer for Scientific Research and Testing
The Lasany LI-294 Microprocessor Single Beam UV-VIS Spectrophotometer is an analytical laboratory instrument designed for measuring absorbance, transmittance and concentration in scientific research, industrial testing and quality control applications. Its single-beam optical system and 1200 lines/mm grating support UV-visible spectral analysis across a broad wavelength range.
With a manufacturer-listed wavelength range of 190–1100 nm and a 2 nm spectral bandwidth, the LI-294 supports routine spectrophotometric measurements and computer-assisted analytical workflows. Compatible scanning software expands its capabilities to include quantitative analysis, wavelength scanning, kinetics studies, multi-wavelength testing and DNA/protein analysis.
The LI-294 is suitable for pharmaceutical laboratories, environmental testing facilities, food inspection laboratories, agricultural chemistry, educational institutions, petrochemical industries and other professional testing environments. A separate configuration is available with a Peltier temperature-control system and sipper arrangement; confirm the exact configuration before ordering.
Key Features of Lasany LI-294
- Single-Beam Optical System: Designed for routine UV-visible absorbance and transmittance measurements.
- Wide Wavelength Range: Supports measurements across 190–1100 nm, as listed for the LI-294/296 series.
- 1200 Lines/mm Grating: Supports wavelength selection for analytical testing.
- 2 nm Spectral Bandwidth: Suitable for routine laboratory spectrophotometric applications.
- Microprocessor Control: Provides electronic control for instrument operation and measurement functions.
- Multiple Measurement Modes: Supports photometric analysis, quantitative analysis, spectral scanning, kinetics, multi-wavelength testing and DNA/protein analysis through compatible software.
- Data Storage: The LI-294/296 series product information lists storage for up to 200 test results and 100 standard curves.
- Computer Connectivity: USB connectivity and a parallel printer interface are listed for the series.
- Dual Light Sources: Uses deuterium and tungsten lamps for UV and visible measurements.
- Optional Temperature Control: A Peltier cell-holder and sipper configuration is available separately for suitable applications.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Lasany |
| Model | LI-294 |
| Instrument Type | Microprocessor Single Beam UV-VIS Spectrophotometer |
| Optical System | Single beam |
| Grating | 1200 lines/mm |
| Wavelength Range | 190–1100 nm, according to the LI-294/296 series product information |
| Spectral Bandwidth | 2 nm, as listed for the standard LI-294 configuration |
| Wavelength Accuracy | 1 nm, as listed in the LI-294/296 series specification |
| Wavelength Repeatability | ≤0.2 nm, as listed for the series |
| Photometric Accuracy | 0.5% T |
| Photometric Repeatability | 0.2% T |
| Photometric Range | 0–200% T, -0.3 to 3 A |
| Stray Light | 0.15% T, as listed for the standard series configuration |
| Stability | ±0.0002 A/h at 500 nm, as listed for the LI-294/296 series |
| Baseline Flatness | ±0.002 A, as listed for the series |
| Noise | ±0.001 A, as listed for the series |
| Light Sources | Deuterium lamp and tungsten lamp |
| Detector | Silicon photodiode |
| Display | 128 × 64 LCD, as listed for the standard LI-294/296 configuration |
| Data Storage | Up to 200 test results and 100 standard curves, as listed for the series |
| Output Interfaces | USB and parallel printer port |
| Optional Configuration | Peltier temperature-control cell holder and sipper system |
Applications of Lasany LI-294
- Pharmaceutical Testing: Absorbance and concentration measurements using suitable analytical methods.
- Environmental Monitoring: Testing of prepared water and environmental samples.
- Food Inspection: Spectrophotometric analysis of suitable food and beverage samples.
- Agricultural Chemistry: Laboratory analysis of prepared agricultural samples.
- Academic Research: Scientific experiments, student practicals and laboratory research.
- Petrochemical Laboratories: UV-visible testing for compatible analytical procedures.
- Water and Wastewater Testing: Measurement of samples using validated spectrophotometric methods.
- Industrial Quality Control: Routine testing and quantitative analysis.
- Biochemical Research: DNA/protein and kinetics workflows when supported by the supplied software and validated method.
Benefits for Scientific Research and Laboratory Testing
The Lasany LI-294 combines a practical single-beam optical design with software-supported analysis for a wide range of UV-visible laboratory applications. Its measurement modes support routine photometry as well as more specialised workflows, including spectral scanning and kinetics analysis when compatible software is supplied.
USB connectivity and a printer interface support data transfer and reporting. Laboratories requiring temperature-controlled sample measurement can consider the separately listed Peltier and sipper configuration, subject to confirmation of compatibility and included accessories.
Configuration and Ordering Information
Specifications may vary by instrument version and supplied accessories. Before purchase, confirm the exact wavelength range, spectral bandwidth, software package, standard accessories and computer compatibility. The Peltier temperature-control and sipper system should be treated as a separate configuration unless explicitly included in the quotation.
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Lasany LI-294 Microprocessor Single Beam UV-VIS Spectrophotometer with Scanning Software for Scientific Research and Laboratory Testing
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