Recently, the Shanghai Consumer Rights Protection Committee conducted a comparative test on 25 electric drying rack products that claim to have sterilization and sterilization effects to test whether they have the advertised sterilization effect. This type of "smart sterilization drying rack" is favored by smart home enthusiasts. The core selling point is the sterilization function of clothes. Most of its sterilization principle relies on the built-in ultraviolet lamp to achieve the sterilization function.
In fact, as soon as the epidemic broke out, UVC-LED products on the market were indeed mixed, such as "sell B product as A product", "70% UVC mixed with 30% UVA", which coincided with the International Consumer Rights Day on 3.15. Take the event of a smart sterilization drying rack as an example. UV Science will show you the test results.
The results of this test show that 2 of the ultraviolet lamps are in the UVC band and 23 are in the UVA band. Nearly half of the sample UV lamps have a set working time of 20 to 30 minutes, which is difficult to achieve a real sterilization effect. The sterilization effect of the UV lamp depends on its waveband, irradiation area, irradiation dose and irradiation time.
From the point of view of the wave band, the insiders know that the ultraviolet sterilization effect of the UVA band is weaker than that of the UVC band, and the sterilization time is longer. It usually takes more than 8 hours of irradiation to have a certain antibacterial/bactericidal effect. At present, not all electric drying racks sterilized by ultraviolet light on the market use UVC-LED, and consumers need to distinguish clearly when buying. That is to pay special attention to two points:
1) If there is UVA-LED (320-405nm) in the adopted waveband, is it the main wavelength sterilization, or the weak purple light can be emitted with the help of the 405 waveband, which is used to assist the UVC-LED to show whether it is in working condition; if it is The main sterilization wavelength is UVA-LED, so long time should be taken into consideration.
2) It is best to buy products produced by brand companies that have certifications such as CGI, SGS, TUV, and China Home Appliance Research Institute.
Tips: Pay attention to the following points when using an electric drying rack with ultraviolet sterilization function: install it on an outdoor balcony or a physically isolated balcony; use the ultraviolet sterilization function according to the product description; do not look directly at the light source, and prohibit personnel, especially children Appear within the range of ultraviolet light; open windows to ventilate after sterilization; leather, silk and other fabrics and brightly colored clothing are not suitable for sterilization under ultraviolet light.
UVC-LED sterilization has its own requirements and methods of use. The blind pursuit of gimmicks will not only stigmatize the actual efficacy of UVC-LED sterilization, but also a waste of resources. In the previous article, we have already introduced to you in detail how to identify whether UVC-LED products are effective and safe. Only by complying with the exclusive game rules of UVC-LED can UVC-LED become a great weapon for protecting health.
Previously, UV Science has discussed with you whether UVC-LED is suitable for home environment, and quoted the opinions of industry leaders. For details, please click [Ultraviolet lamp is not suitable for home use? Listen to the professional opinions of these experts! 】
The repeated ineffective killing of UVC-LED tells us:
For manufacturers in the industry: it must always be remembered that the growth of the UVC-LED industry can only rely on continuous technological breakthroughs and reasonable product design to use UVC-LED products in scenarios that are suitable for their current power and efficiency. Only by ensuring the sterilization efficiency of its products can it be recognized and supported by the public. I believe that with the close cooperation of upstream and downstream manufacturers, the industry will be able to promote faster development and bring consumers more effective and safe disinfection products.
