Ultraviolet disinfection lamps use ultraviolet light to kill bacteria—including vegetative cells, spores, mycobacteria, coronaviruses, fungi, rickettsiae, and chlamydia. Any surface, water, or air contaminated by these pathogens can be disinfected using ultraviolet light. Ultraviolet disinfection lamps are primarily categorized into three types: high-pressure, medium-pressure, and low-pressure. However, in most disinfection applications, we mainly rely on low-pressure lamps. So, in what specific ways are ultraviolet disinfection lamps applied? Next, our editor will give you a brief explanation!

(1) In surface disinfection applications, this disinfection device is primarily used in fields such as food, electronics, semiconductors, liquid crystal displays, plasma televisions, crystal oscillators, precision instruments, chemical industry, medicine, healthcare, biology, beverages, and agriculture. Because... UV When light sources illuminate the surfaces of foods, materials, and other substances, they deliver rapid, highly efficient sterilization with no pollution, while also helping to maintain the high quality of the products. As a result, compared to traditional sterilization methods, this approach achieves faster surface sterilization. Moreover, it enables continuous and batch processing, and is simple and convenient to operate, environmentally friendly, and free from secondary pollution.

(2) In water treatment applications, the primary method used is ultraviolet (UV) disinfection—specifically, two types of UV systems: immersion and flow-through. In the immersion system, the UV lamp is directly submerged in the water; whereas, in the flow-through system, the UV lamp is housed inside a protective sleeve. Currently, the flow-through method is predominantly employed. The principle behind the flow-through system is that a pump generates pressurized water flow, which then passes through the outer surface of a quartz sleeve that allows UV light to penetrate. Since the UV light emitted by the UV lamp effectively disinfects and sterilizes the water, this system is characterized by a very rapid water flow rate; typically, the water spends no more than [duration not specified] passing through the quartz sleeve. 1s Therefore, the ultraviolet intensity of the germicidal lamp must be very high.

(3) Applications in healthcare. This primarily leverages ultraviolet disinfection lamps to sterilize and disinfect air, employing two methods: static direct irradiation and flowing-air disinfection. In the static direct irradiation method, ultraviolet disinfection lamps directly shine on the air to achieve sterilization; however, its main drawback is that areas not directly exposed cannot be disinfected, and during disinfection, people must leave the premises. The flowing-air disinfection method, on the other hand, uses a dynamic air disinfection device that effectively addresses these two shortcomings. The principle behind the flowing-air disinfection device is to circulate indoor air continuously, thereby subjecting it to sterilization and achieving the goal of disinfecting the entire indoor environment. The structure of such devices generally borrows from the casing of household air conditioners. Previously, flowing-air disinfection devices were used exclusively in hospitals; now, however, they have become widely adopted in homes, offices, and public spaces. Moreover, their functions have diversified, enabling them to serve health-care and preventive purposes and making them valuable health-related products.

(4) Hygiene and disinfection are requirements during the production, processing, filling, and packaging of food. Since disinfection using ultraviolet lamps is a commonly employed, cost-effective, and environmentally friendly method, it also serves as an alternative to frequently relying on chemical processes.

1. Disinfection on packaging materials: Because bacteria in the filling plant, if exposed to short-wave radiation, ... UV-C Radiation will immediately kill [them]. Therefore, the purity of packaging materials is primarily used to determine whether the packaging materials are qualified.

2. On conveyor belts: This technology is primarily used for transporting meat, fish, potato products, as well as fruits and vegetables. To further enhance economic efficiency, it is essential to further strengthen hygiene procedures throughout the food processing chain.

3. Surface disinfection of food: for example, surface disinfection of fruit and vegetable products and hard cheeses.

The sterilization principle of ultraviolet disinfection lamps

What exactly is ultraviolet disinfection? Let... Editor Let me explain it to you in detail. Ultraviolet sterilization Destroying and altering microorganisms through ultraviolet irradiation. DNA The (deoxyribonucleic acid) structure immediately kills bacteria or enables them to reproduce, achieving the purpose of sterilization—truly possessing a bactericidal effect. UVC Ultraviolet, because C Ultraviolet bands are easily absorbed by living organisms. DNA Absorb You 253.7nm By the way, the reason why ultraviolet (UV) technology is now being adopted and developed so rapidly is that UV disinfection is a purely physical sterilization method with advantages such as simplicity and convenience, broad-spectrum efficiency, no secondary pollution, ease of management, and the ability to achieve automation. With the introduction of various newly designed UV disinfection lamps, the application scope of UV sterilization continues to expand.

The division and functions of different UV wavelength bands:

Scientists classify ultraviolet radiation into four bands based on its biological effects and wavelength. :

1.UVA Band wavelength 320 ~ 400nm Also known as long-wave blacklight ultraviolet radiation, it has strong penetrating power and can pass through most transparent glass and plastics. Sunlight contains long-wave ultraviolet radiation, which accounts for more than... 98% Can penetrate the ozone layer and cloud cover to reach the Earth's surface. UVA Reaches directly into the dermis, damaging elastin and collagen fibers. Our skin tans. 360nm Wavelength UVA Ultraviolet light corresponds to the phototactic behavior of insects, and a response curve is used to design insect traps. 300-420nm Wavelength UVA The UV light tube made of specially tinted glass that completely blocks visible light emits only ultraviolet radiation. 365nm Near-ultraviolet light is used in applications such as mineral identification, stage decoration, and counterfeit detection.

2.UVB Band wavelength 275 ~ 320nm Also known as the erythema effect, ultraviolet rays and other short-wavelength radiation are absorbed by transparent glass. Sunlight contains a large portion of ultraviolet radiation, most of which is absorbed by the ozone layer—only the sufficient... 2% It can be especially intense on Earth's surface during summer and at noon. UVB Ultraviolet radiation has an erythematous effect on the human body and can promote mineral metabolism and vitamin synthesis within the body. D Formation. Prolonged or excessive exposure to ultraviolet radiation can cause the skin to tan and lead to redness, swelling, and peeling. Ultraviolet health lamps and plant growth lamps emit light through special purple-transmitting glass (which allows... 254nm Downlight) and peak 300nm Made from nearby phosphors.

3.UVC Band wavelength 100 ~ 275nm Also known as short-wave germicidal ultraviolet light, it has weak penetrating power and cannot pass through most transparent glass or plastics. Sunlight contains short-wave ultraviolet radiation that is almost entirely absorbed by the ozone layer. Short-wave ultraviolet radiation poses significant harm to the human body; even brief exposure can cause skin burns, while prolonged or high-intensity exposure may lead to skin cancer. Ultraviolet disinfection lamps emit this radiation. UVC Short-wave ultraviolet.

4.UVD Band wavelength less than 100nm Also known as vacuum ultraviolet.

Research indicates that the UV light market is entering a new phase, with solutions centered on germicidal efficacy becoming increasingly important. As more and more commercial enterprises, factories, and high-end hospitals adopt large-format applications, UV disinfection technology is playing an ever-greater role in helping businesses achieve their automation and operational goals, as well as in promoting public health. For Shanghai Suli Biotechnology Co., Ltd., a supplier of UV disinfection lamps, it’s crucial to stay attuned to market changes and to create new sales opportunities by collaborating with other partners to develop comprehensive solutions, thereby contributing to the broader society.     

Use of ultraviolet disinfection lamps

When using a UV disinfection lamp for ultraviolet disinfection, there are many important precautions to keep in mind. Have you already familiarized yourself with them? Below... Editor I’ll explain it to you one by one.

1 When using a UV disinfection lamp to directly disinfect or sterilize indoor air, the room should be kept clean and dry, with reduced dust and mist, and the temperature should be below— 20 °C or higher 40 ℃, relative humidity greater than 60% The irradiation time should be appropriately extended. People should not stay indoors, otherwise they could be exposed to radiation, which would cause considerable harm to the body.

2 When using a UV disinfection lamp, the irradiance intensity of a new lamp must not be lower than... 90uw/cm2 When using ultraviolet radiation, the irradiance intensity must not be lower than 70 µW/cm², All below 70uw/cm2 All light tubes must be replaced promptly!

3 When disinfecting with a UV disinfection lamp, the duration generally needs to be longer than... 3 Minutes—too short a duration can affect the disinfection effect.

4 When disinfecting the surfaces of objects with ultraviolet light, the surfaces to be irradiated must be directly exposed to UV radiation and must receive a sufficient dose of irradiation.

5 Do not allow ultraviolet light sources to shine directly on people, as this may cause injury.

6 The ultraviolet intensity meter should be checked every... 1 Annual calibration 1 Next.

Since ultraviolet light can penetrate cells and cause them to die, when using UV disinfection, it’s important to avoid direct exposure to human skin—especially the eyes. When a UV disinfection lamp is turned on, never look directly at the lamp tube. Because short-wave UV light does not pass through ordinary glass, wearing glasses can help protect your eyes from damage. If you accidentally injure your eyes, in most cases it’s not serious—similar to a sunburn. In severe cases, you can use eye drops or breast milk to aid recovery. In occupied spaces, avoid using lamps equipped with ozone-generating tubes, as high concentrations of ozone can be toxic to humans.

To measure the intensity of ultraviolet light emitted by UV disinfection lamps, you must use a specialized instrument designed for measuring ultraviolet radiation. --- Ultraviolet irradiance meter—recommended models are manufactured by Lu Yang in the U.S. LUYOR-254 Ultraviolet illuminance meter. During testing, the UV lamp should be placed horizontally. Position the detector of the ultraviolet irradiance meter one meter vertically below the center of the lamp tube, while simultaneously shielding against stray light. Before taking measurements, the UV disinfection lamp needs to be turned on for a certain period of time; only after its light source has stabilized will the resulting data be more reliable. For further details, refer to the safe usage guidelines and recommended periodic measurement methods for UV disinfection lamps.

LUYOR-254 Ultraviolet radiometers consist of a measurement display and a detector. ( Probe ) Consisting of two parts, taking into account that the detector needs to be positioned directly below the light source during measurement. 1m Here, the new model LUYOR-254 The probe of the UV radiometer is equipped with small, strong magnets, which make it easy to secure the detector during measurement. Simply place a metal object that can be attracted by the magnet in the corresponding position, and the detector will be firmly fixed, allowing for convenient testing.

The ultraviolet light emitted by UV disinfection lamps is an invisible type of light. 253.7nm Its wavelength can effectively exert a bactericidal effect, because cells have a regular absorption spectrum for light waves—in which... 230~280 nm The ultraviolet rays with the greatest absorption are those that are actually absorbed by the cell's genetic material— DNA It plays a photochemical role.

Personal safety precautions when using disinfection lamps: Since ultraviolet (UV) light can kill cells, care must be taken during UV disinfection to avoid direct exposure of human skin to prevent injury. UV sterilizers should be equipped with a cumulative time reminder function and an intensity alarm function, so as to remind users to replace the UV lamp tube in a timely manner. For specific guidelines, biological laboratories in research institutions can refer to “How to Safely Operate UV Disinfection Lamps in Biological Laboratories.”

Scope of application for ultraviolet disinfection lamps

UV disinfection and sterilization It has a wide range of applications—hospitals, schools, nurseries, cinemas, buses, offices, homes, and more. It can purify the air and eliminate musty odors. Moreover, it generates a certain amount of negative oxygen ions. Rooms disinfected with ultraviolet light have particularly fresh air. In public spaces, UV disinfection helps prevent the airborne or surface transmission of certain pathogens. As the market evolves and customer demands continue to rise, manufacturers of UV lamps are now focusing on developing long-life lamp models, such as the cold cathode series, which feature an outer diameter of... 4、5、6、10、12mm UV lamp tubes.

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