How to disinfect UV lamps
With the increase in health awareness, ultraviolet disinfection lamps have become a hot topic recently due to their efficient sterilization capabilities. The following is a compilation of the core content on UV lamp disinfection in the past 10 days across the Internet, covering principles, usage and precautions to help you disinfect scientifically.
1. Principle of UV disinfection

Ultraviolet light (UV-C band) achieves a sterilizing effect by destroying the DNA/RNA structure of microorganisms, and has a significant effect on bacteria, viruses and molds. The following is the UV killing efficiency of common microorganisms:
| microbial type | Required irradiation dose (μW·s/cm²) |
|---|---|
| E. coli | 6,600 |
| Staphylococcus aureus | 10,000 |
| influenza virus | 15,000 |
2. Steps for using UV lamps
1.Safety preparation: Clear the disinfection area, ensure that no one, animals and plants are present, and wear protective glasses.
2.Computation time: Determine the irradiation duration based on the space volume and lamp power (generally 30-60 minutes).
3.Operation process:
| Space area (㎡) | Recommended time for 30W lamp |
|---|---|
| 5-10 | 30 minutes |
| 10-20 | 45 minutes |
| 20+ | More than 60 minutes |
3. Precautions
1.Safety warning: Direct exposure may cause skin burns and keratitis. Ventilation is required for 30 minutes after use.
2.Lamp maintenance: Regularly clean the surface of the lamp (wipe with alcohol), and it needs to be replaced after its lifespan is about 8,000 hours.
3.Applicable scenarios: Suitable for disinfection of air and object surfaces, but not suitable for direct exposure of fabrics and food.
4. Recent hot issues
1.Purchasing household UV lamps: It is recommended to choose a model with delayed shutdown and human body sensing functions.
2.Ozone problem: Some lamps will produce ozone, so you need to confirm whether the product complies with the GB/T 19258 standard.
3.alternative: UVA-LED sterilizer can be used for UV-sensitive areas, which is safer.
Summary: Ultraviolet lamps are effective disinfection tools, but they must be operated properly. Based on recent user feedback, it is recommended to be used in medical treatment, express delivery disinfection and other scenarios. It is recommended to give priority to ventilation and chemical disinfectants in home environments.
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