Single Beam UV-Visible Spectrophotometer LUS-T311

Introduction

Single Beam UV-Visible Spectrophotometer features wavelength accuracy of ±0.8 nm, ensuring that each selected wavelength closely matches its true value. It has an automatic wavelength calibration mode for precise wavelength accuracy and reliable peak positioning. The spectrophotometer includes three adjustable scanning speeds to balance scan duration and data quality. Our single beam UV-visible spectrophotometer provides a silicon photodiode detector for precise measurements without the need for high-voltage components.

This analytical equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Single Beam UV-Visible Spectrophotometer passes monochromatic light through a sample to determine chemical characteristics using one optical path. It is widely used in the paper, pulp industry, photography, and semi-conductor industry for assessing UV transmission.

Specifications

Spectral Bandwidth	4nm (optional 2nm)
Wavelength Range	190 to 1100 nm
Optical System	Single beam path, holographic diffraction grating
Wavelength Accuracy	± 0.8 nm
Wavelength Repeatability	0.2 nm or less
Wavelength Setting	Automatic Wavelength Setting
Wavelength Resolution	0.1 nm
Luminosity Range	0 to 200% T, -0.3 to 3A, 0 to 9999 C, 0 to 9999 F
Photometric Accuracy	±0.002A (0 to 0.5A), ±0.004A (0.5 to1A), ±0.3%T (0 to100%T)
Photometric Repeatability	≤ 0.001A (0 to 0.5A), ≤0.002A (0.5 to 1A), ≤0.2%T (0 to 100%T)
Stray Light	≤0.1%T (220/360nm)
Baseline Drift	≤0.002A/ h (500nm,0A)
Noise	± 0.2%T (0%T line) ±0.4%T (100%T line) ±0.001A (500nm)
Baseline Flatness	±0.003A
Scan Speed	Three adjustable speeds: high, medium, and low
Detector	Imported silicon photodiode
Light Source	Imported long-life tungsten and deuterium lamps
Display	3-inch 128× 64 dot matrix display
Keyboard	Tap film keys
Data Interface	Port
Printout	Microprinter, PC (Optional)
Power Supply	AC 90 to 250V, 50/60Hz
Overall Dimensions	430 ×320 ×195mm
Weight	12 kg

Features

High Wavelength Accuracy

Adjustable Measurement Modes

Large Sample Chamber

Low Stray‑Light Performance

Multi-Wavelength Testing

FAQs

1. What are the key factors to consider when selecting this analytical equipment for laboratory use?

When selecting this analytical equipment, key factors include: 1) The instrument's precision and accuracy to meet experimental requirements; 2) Compatibility with the types of samples and applications you will be working with; 3) Ease of use and maintenance requirements; 4) Safety features to protect operators and samples; 5) Calibration and certification requirements; 6) Cost-effectiveness and long-term reliability; 7) Technical support and service availability from the supplier. Evaluating these factors ensures that the instrument meets your laboratory's specific needs.

2. How often should this analytical equipment be calibrated to ensure accurate results?

It is recommended to calibrate this analytical equipment at least once every 6-12 months under normal usage conditions. More frequent calibration (every 3-6 months) may be necessary if: 1) The instrument is used continuously for extended periods; 2) It is exposed to harsh environmental conditions (temperature fluctuations, humidity, dust); 3) It is used for critical applications requiring high precision; 4) The instrument has been moved or subjected to physical shock; 5) Calibration checks indicate significant deviations from standard values. Always follow the manufacturer's calibration guidelines.

3. What are the common maintenance procedures required for this analytical equipment?

Common maintenance procedures include: 1) Regular cleaning of the instrument's exterior and sample contact surfaces to prevent contamination and ensure proper operation; 2) Inspection of moving parts (if applicable) for wear and lubrication as recommended by the manufacturer; 3) Replacement of consumable parts (filters, bulbs, reagents) according to usage guidelines; 4) Verification of performance parameters (temperature, pressure, voltage) regularly; 5) Storage of the instrument in a clean, dry environment when not in use; 6) Keeping a maintenance log to track service activities and identify potential issues early; 7) Following the manufacturer's specific maintenance schedule for optimal performance and longevity.

4. Can this analytical equipment be used with different types of samples, and are there any compatibility considerations?

Yes, this analytical equipment can be used with a variety of sample types, but compatibility considerations are important: 1) Check if the instrument's materials are compatible with the chemical composition of your samples (avoid corrosive or reactive substances that may damage the instrument); 2) Ensure that the sample volume and concentration are within the instrument's recommended range; 3) For biological samples, consider sterility requirements and potential cross-contamination risks; 4) For volatile or hazardous samples, ensure proper ventilation and safety precautions are in place; 5) Consult the manufacturer's documentation for specific sample compatibility guidelines, and perform compatibility tests with new sample types before regular use.

5. What should be done if the analytical equipment malfunctions or produces inconsistent results?

If malfunctions or inconsistent results occur: 1) First, check the instrument's user manual for troubleshooting guidelines specific to the issue; 2) Verify that the instrument is properly calibrated and within its calibration period; 3) Inspect for obvious issues such as loose connections, damaged parts, or incorrect settings; 4) Clean the instrument thoroughly to remove any contamination that may affect results; 5) Repeat the experiment with a known standard sample to determine if the issue is with the instrument or the sample; 6) If the problem persists, discontinue use of the instrument to prevent further damage or inaccurate results; 7) Contact technical support or a qualified service technician for diagnosis and repair, providing details of the issue and any troubleshooting steps already performed.

1. How can baseline drift during long scans be managed effectively in ?

It supplies premium Single Beam UV-Visible Spectrophotometer . Even Baseline drift-caused by lamp instabilities, temperature shifts, or aging optics—can accumulate error over long-wavelength scans. Mitigation includes warming the lamp for ~30 minutes before use, blank scans at frequent intervals, and maintaining ambient stability. Performing baseline correction against an air-blank or matched solvent minimizes effect. Choosing slower scan rates increases signal averaging, further stabilizing baselines. Regular maintenance—cleaning optics and securing beam-path seals—is essential for sustained baseline flatness.