1. High sensitivity: Capable of detecting low-concentration samples with precision.
2. Strong selectivity: Through the selection of specific wavelengths of light, it can selectively detect target substances. 
3. Intelligent operation panel: Features dot-matrix display with dual-wavelength functionality. Lights can be used individually or combined.
4. Quartz ultraviolet lamp tube: The ultraviolet lamp consists of quartz glass, an ultraviolet lamp tube, and optical filter. 
5. Adjustable flexible arm: Features an adjustable flexible arm for easy height adjustment during experiments.

Precautions:
1. Grounding protection: Ensure the instrument is properly grounded.
2. Wear protective goggles: Wear protective goggles during operation to avoid damage from ultraviolet to the eyes and skin.
3. Prevent electric shock: Avoid liquids splashing onto the instrument to prevent electric shock or electrical faults.
4. Environmental requirements: Place in a cool, well-ventilated, and dry area, avoiding direct sunlight and acid or alkali vapors.
5. Cleaning and maintenance: Use a clean soft cloth to wipe the instrument and sample stage. Do not use chemical cleaners.
6. Sample handling: Avoid direct ultraviolet exposure to the human body. After testing, turn off the power and clean the sample stage.
7. Regular cleaning: Regularly wipe the instrument surface to keep it clean.
8. Check power cords: Regularly inspect power cords for damage. Replace them if any problems are found.
9. Storage conditions: When not in use for a long time, store in a dry environment and avoid direct sunlight.
10. Regular calibration: Regularly calibrate the instrument to ensure accurate measurement results.
11. Prevent liquid entry: Avoid liquids entering the instrument to prevent damage to the equipment.