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Lasany LI-721S Single Beam Visible Spectrophotometer with Software for Professional Laboratory Use
The Lasany LI-721S Microprocessor Single Beam Visible Spectrophotometer is a laboratory instrument designed for routine analytical measurements, scientific research, educational experiments and quality-control applications. Its visible-light measurement capability supports absorbance, transmittance and concentration analysis for suitable laboratory methods.
The LI-721S includes software support for data handling and a serial RS232 interface for transferring measured values to a compatible computer. Its manual wavelength adjustment, 2 nm spectral bandwidth and multiple photometric modes make it suitable for laboratories performing routine visible spectrophotometry and basic quantitative analysis.
Key Features of Lasany LI-721S
- Single Beam Optical System: Designed for routine visible spectrophotometric measurements.
- Visible Wavelength Range: Manufacturer listings specify a range around 320–1020 nm; confirm the applicable datasheet for the supplied unit.
- Software Included: Supplied software supports computer-based data handling, subject to compatibility and configuration.
- Manual Wavelength Selection: Wavelength is selected using the front-panel adjustment dial.
- 2 nm Spectral Bandwidth: Supports general-purpose visible-region analysis.
- Multiple Photometric Modes: Supports transmittance, absorbance, concentration and factor modes.
- 50 mm Sample Holder: The instrument is listed with a 50 mm cell holder; confirm holder compatibility with the intended cuvettes.
- RS232 Connectivity: Allows measured data to be transferred to a compatible computer.
- Glass Cuvettes Included: The manufacturer’s standard configuration lists four 10 mm glass cells.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Lasany |
| Model | LI-721S |
| Instrument Type | Microprocessor Single Beam Visible Spectrophotometer with Software |
| Optical System | Single Beam |
| Wavelength Range | 320–1020 nm, according to the main LI-721 listing; some LI-721S documentation lists 320–1000 nm |
| Wavelength Adjustment | Manual |
| Spectral Bandwidth | 2 nm |
| Photometric Range | 0–200%T and -0.3 A to 3 A, as listed on the LI-721 product page; confirm the LI-721S-specific datasheet |
| Photometric Modes | Transmittance, Absorbance, Concentration and Factor |
| Sample Holder | 50 mm cell holder |
| Computer Interface | RS232 serial port |
| Software | Software CD listed in the standard configuration |
| Standard Cuvettes | Four 10 mm glass cells |
| Standard Accessories | Main instrument, operating manual, power cable, four glass cells, software CD, RS232 cable and dust cover |
Applications
- Scientific research and general laboratory analysis
- Routine absorbance and transmittance measurements
- Concentration analysis using appropriate analytical methods
- Educational and institutional laboratory experiments
- Industrial testing and quality-control workflows
- Chemical analysis compatible with visible spectrophotometry
Benefits for Professional Laboratory Use
The Lasany LI-721S combines routine visible spectrophotometry with software-assisted data handling. Its multiple measurement modes support different analytical workflows, while the RS232 interface enables data transfer to compatible computer systems. It is intended for laboratories that require a practical instrument for routine testing, teaching and general scientific analysis.
Ordering and Configuration Information
Before ordering, verify the exact wavelength range, software compatibility with the laboratory computer, supplied RS232 cable, cell-holder configuration, power requirements and warranty with the supplier. The LI-721 and LI-721S are listed separately by the manufacturer, and specifications may vary between published documents.
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Lasany LI-721S Microprocessor Single Beam Visible Spectrophotometer with Software for Laboratory Research, Testing & Quality Control
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