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During the COVID-19 epidemic, UV Lamps are a common method of disinfection and the following will be the Tepro UV Lamps supplier to provide some tips for the UV Lamps.Common sense of UV lamp tube1. Origin of ULTRAVIOLET air disinfection The early study of air disinfection began in the 1920s. It was first used in hospital operating rooms in 1936, and in schools for the first time in 1937. 2. Principle of UV lamp disinfection Uv lamp is a type of low-pressure mercury lamp that USES ultraviolet radiation from the intensified low-pressure (<10-2Pa) mercury vapor to disinfect the lamp. The main spectral lines of ultraviolet disinfection lamps are 253.7nm and 185nm, and the peak wavelength is 253.7nm. The ultraviolet rays of these two wavelengths can play a good bactericidal effect. The former can directly act on the genetic material of biological cells, namely DNA, which will be destroyed and lead to bacterial death, and have the function of breaking down ozone. The latter, by interacting with oxygen in the air, produces strong oxidizing ozone, which kills bacteria. 3. Precautions for using UV lamps I. Method of use (1) Object surface disinfection Irradiation mode: the best method is mobile proximity irradiation, also can be suspended type irradiation, small items can be placed in the ultraviolet disinfection box irradiation. The distance between the sterilized articles and the lamp tube is easy to be within 1 meter, and the surface of the articles must be directly irradiated. The surface of the paper and fabric with rough surface should be properly extended for irradiation time, and both sides should be irradiated. (2) indoor air disinfection Direct or indirect illumination can be used. The use of mobile or direct illuminate suspension type ultraviolet lamp, under the condition of no implementation, indoor installation of ultraviolet lamp is > 1.5 W/m3, the number of tubes within 2 meters above the ground, irradiation time 30 minutes or more, the latter using high intensity ultraviolet air disinfector, disinfection effect, reliable and can be used in indoor when someone, need to boot up 30 minutes or more. Ii. Matters needing attention (I) The effective disinfection time of ultraviolet lamp tube is 1000h, and the effective disinfection time of high-intensity ultraviolet air sterilizer is 1500h, which should be replaced on time; (II) During the use, keep the light surface clean, wipe it with 75% ethanol cotton ball once a week, and wipe it at any time when there is dust or oil on the surface of the light tube. (3) The disinfection room should be clean and dry, the temperature should be between 20 ℃ and 40℃, the relative humidity should be less than 80%, if exceeding this range, the irradiation time should be extended; (4) Intensity of ultraviolet radiation. It should be tested every six months. If it is lower than 70uW/cm2, it should be replaced at any time. (5) The ultraviolet ray shall not be directly irradiated to the person, so as not to cause damage. (6) Keep a record of the date of disinfection, the exposure time, the accumulated time of using the lamp and the time of changing, and the bacterial culture and results of the disinfection articles at any time. Why does the UV lamp tube turn black? In the process that USES ultraviolet ray sterilizer, can encounter the following similar circumstance sometimes, ultraviolet ray lamp tube is in before use very normal, but after use partial however blackened. Is there a quality problem with the lamp? Or was it a mistake? Why can ultraviolet lamp tube blacken? Will the bactericidal efficiency be affected after blackening? 1. The new UV lamp tube is black and contains sundries. Ultraviolet light tubes commonly used in ultraviolet sterilizers are made from mercury vapor pressure mixed with a variety of other metals into a vacuum glass chamber. The tube contains an indispensable element: mercury, before the mercury has not completely evaporated, its shape is in the form of particles in the tube. Other metals can also stick to the wall like dirt, and in some transparent tubes, they can be particularly clear. But don't worry, it's generally normal. 2. Black out when you start using it Uv sterilizer New tubes or some long unused tubes, but once the lamp is lit, there will be a mass of black gas in the filament area, is this bad rhythm? Of course not, the black gas is actually mercury vapor, the mercury around the filament gathered in the heat began to evaporate, and along the wall of the tube volatilized, the color of more and more faint, and finally disappeared. Of course, not every tube is like this, because not every tube of mercury is exactly concentrated around the filament, this is the new lamp unique normal phenomenon. 3. The lamp goes black after the lights are out When the UV sterilizer lamp goes out, the mercury condenses as it cools, and has the property of concentrating at the coldest end of the tube. Therefore in the lamp tube the coldest place, or close to the air conditioning place, often has the mercury repeated evaporation condenses and leaves the mercury pollution trace, this is the normal phenomenon 4. Black spots on the cold end Ultraviolet sterilizer lamp tube in the short term after use, often can see the filament edge has a black spot, and will be longer and larger as the use of time. The reason is that the lamp tube is getting smaller and smaller, the power is getting larger and larger, the filament is getting longer and longer, and the filament electrode is getting closer and closer to the tube wall. In each preheating of the lamp, if the amount of ion bombardment is too large, it is easy to adhere to the tube wall and cause the black spot. The reasons are as follows: The error of power supply is too big during use. Too many frequent switches. The starting voltage is too high or the preheating time is wrong, and the number of flashover is too much. The ballast preheating current is too high. Too high starting voltage or insufficient preheating time of electronic ballast. 5. Black as a ring After the ultraviolet sterilizer lamp tube has been used for a long time, there is a black ring around the filament of the metal halide bulb. This is because every time the lamp is lit, the ions generated by the cathode are relatively heavy, and the cathode has not been able to run to the anode in time with the electrons, resulting in deposition on the tube wall, which is a natural phenomenon, and has nothing to do with the tube life and light effect. 6. Discoloration of pipe walls In the production process, if the heating and baking and exhaust vacuum and other processes are not perfect, will remain hydrogen elements, this will also be combined with mercury and metamorphism, pollution fluorescent lamp powder, if the new tube that occurs, it is a bad tube -(yellow and black). In addition, the sodium calcium glass or high lead glass of the lamp contains a lot of sodium elements. In the process of lighting, sodium will be precipitated from the glass tube and combined with mercury to become sodium amalgam, deposited in the fluorescent lamp powder layer, resulting in the deterioration of the fluorescent lamp powder. To sum up, there are many reasons for the uv sterilizer lamp to become black, but most of them will not affect the normal use of the UV lamp.

In at present a lot of disinfect product, ultraviolet ray disinfect lamp is one of common disinfect lamp, with common fluorescent lamp have certain distinction. What is the common difference between ultraviolet sterilization lamp and ordinary fluorescent lamp?The difference between ultraviolet sterilization lamp and ordinary fluorescent lampThe difference between ultraviolet sterilization lamp and ordinary fluorescent lamp is that the sterilization lamp does not need to stimulate the ultraviolet ray into visible light, the wavelength is 253.7nm ultraviolet ray can play a very good sterilization effect. The absorption spectrum lines of cells to light waves are regular. Cells have the maximum absorption of ultraviolet rays with a wavelength of 250~270nm. So what is the effect of these ultraviolet rays absorbed by cells on cells? It can function in the cell's genetic material or DNA, thereby to cells play a allochromatic, ultraviolet photon energy is absorbed DNA base pairs in the cells, it will cause a great deal of genetic material in the cells of variation, this with people by illuminate the x ray cells will arise, ultraviolet irradiation can make the bacteria died instantly or cannot reproduce, under the action of this can achieve the purpose of sterilization. Although the principle of ultraviolet sterilization lamp and fluorescent lamp and energy-saving lamp is the same, but the use of materials is different, ordinary fluorescent lamp USES ordinary glass, but such a material can not make the wavelength is 253.7nm ultraviolet ray out, so ultraviolet sterilization lamp can not use ordinary glass. You should use what material to make uv give up, that is quartz glass, the material of uv transmittance is very high, can reach 90%, so the quartz glass is the best material to do the sterilization lamp, due to the performance of the quartz glass and thermal expansion coefficient and common glass has a very big difference, so the ultraviolet germicidal lamp sealing cannot be used when using the common fluorescent lamp manufacturing high degree of automation of the circular sealing solution, to use manufacturing high technical content of technology, so the ultraviolet germicidal lamp on market price higher than the ordinary energy-saving lamps. Advantages and disadvantages of ultraviolet sterilization lamp The spectral lines of ultraviolet sterilization lamps are mainly 254nm and 185nm. Among them, 254nm is the ozone-free ultraviolet ray and 185nm is the ozone-free ultraviolet ray. Ozone type: Advantages: ozone has a strong oxidation, can effectively kill bacteria, ozone dispersion can just make up for the ultraviolet ray only along the straight line, disinfection has the shortcoming of dead Angle. Weakness: but exceed bid ozone is an invisible killer! It strongly irritates people's respiratory tract, resulting in sore throat, chest cough, bronchitis and emphysema, elimination of poison need to open a window for ventilation. Ozone-free: Advantages: no ozone, sterilized people can enter the room immediately. Disadvantages: only along the straight line, disinfection has a dead corner. How to test whether the ultraviolet lamp is qualified? (1) Install the ultraviolet lamp on the measuring stand and indicate the exposure table at the vertical center position below the lamp tube (the distance between the lamp tube and the exposure table can be adjusted up and down to reach the specified intensity of exposure during detection). (2) Open the TUV36W ultraviolet lamp tube, and after 5min, the tube will work steadily. According to the intensity indicated by each standard color block on the indicator card, adjust the ultraviolet radiation intensity (measured by illuminometer) at the test point in the center of the irradiation table under the lamp tube respectively for subsequent irradiation test. (3) During the irradiation test, the discoloration area of the indicator card shall be irradiated on the measuring stand. Each group of 10 indicator CARDS was divided into one group, each group was irradiated for 1 min, and each intensity irradiated for 3 groups (a total of 30 indicator CARDS). (4) Immediately after irradiation, observe the illuminated indicator card with the naked eye, and compare the color blocks in the discoloration area with the corresponding standard color blocks. (5) At the same time, determine the intensity of uv exposure with an illuminometer to check with the result of the indicator card. (6) If the coincidence rate between the color block of the discoloration area and the standard color block and the detection result of the indicator card and the measurement result of the illuminometer is ≥90%, it can be judged as qualified. Can ultraviolet lamp dispel formaldehyde and mite bug? Ozone produced by ultraviolet lamps removes formaldehyde. Ozone has a strong affinity, can achieve the purpose of "fresh" air, formaldehyde oxidation decomposition into harmless to human body carbon dioxide (CO2) and water (H2O), the specific chemical reaction formula is HCHO+2O3=CO2+H2O+2O2, 2HCHO+2O3=2CO2+2H2O+O2. And has the bactericidal effect at the same time. Because ozone is a kind of harmful gas, it can cause certain harm to human body and other living things. Its strong oxidizing material also has strong corrosiveness at the same time, therefore can cause certain damage to the articles in the home. So ozone lamps have been replaced by new methods to remove formaldehyde. Ultraviolet lamp can remove mites The results of scientific research show that the killing rate of ozone on bacteria and viruses is much higher than that of ultraviolet ray. Ozone is easy to dissolve in water, and its solubility in water is about 13 times that of oxygen. After dissolving in water, ozone has stronger disinfection and sterilization ability. Ozone is harmful in small amounts, generally not more than one percent acceptable. Small amounts can be refreshing and have many benefits. Ozone can kill mites. Ozone disinfection is better than chemical disinfection and ultraviolet irradiation, sterilization is faster, sterilization is better under high humidity. Ozone is the allotrope of oxygen. With ozone function ultraviolet disinfection lamp, only its ultraviolet radiation intensity is higher than ordinary ultraviolet lamp, produce ozone is its "incidental" function, because this the ozone amount that its produce obviously cannot compare with "full-time" ozone machine. When ultraviolet rays are irradiated, they produce more ozone because of oxidation, such as high ultraviolet intensity. Uv penetration is very weak (generally used to disinfect surfaces where the light source is no more than 1. The ultraviolet ray disinfection lamp that has ozone function is better with, because it is in while using ultraviolet ray disinfect germ, still produce ozone to disinfect, still clean air at the same time. Sufficient concentration and long enough time can kill mites. There are videos of such experiments abroad and I have seen them. But ordinary concentration of ozone gas and the concentration of room disinfection may not work. Ozone is highly destructive to viruses. For example, when the ozone concentration is 0.05-0.45 mg/L, the Poloi virus will lose its activity in 2 min. At a ozone concentration of 0.3 at a cost of mg/L, the action was completed in 2.4 min.

I'm sure you've all seen uv lamps, especially during the covid-19 outbreak, when the demand for uv lamps is increasing, so how do you use them correctly? Now, Tepro UV Lamps will introduce the use of UV Lamps and important notes. Use of UV lamps (1) disinfection of the surface of articles: 1) irradiation method: it is best to use portable uv sterilizer for close range mobile irradiation, or uv lamp suspension irradiation. Small items can be put into the uv disinfection box irradiation. 2) irradiation dose and time: different types of microorganisms have different sensitivities to ultraviolet radiation, so the irradiation dose must be used to kill the target microorganisms when the ultraviolet radiation is used for disinfection. If you want to kill normal bacteria, set your radiation dose to 10,000 constant W.s/cm2. Kill 100, 000 bacterial spores, W.s/cm2; The resistance of the virus to ultraviolet rays is between the bacterial propagator and the bud. Fungal spores are more resistant to uv radiation than bacterial spores, sometimes up to 600, 000 feet. But pathogenic fungi are less resistant to uv radiation than bacterial spores. If the target microorganism is unknown, the radiation dose should not be less than 100 000 W.s/cm2. The irradiation dose is the product of the irradiation intensity and irradiation time of the uv lamp on the surface of the articles. Therefore, the required irradiation time can be calculated according to the irradiation intensity of the ultraviolet light source. For example, if you use a uv surface disinfector with an irradiation intensity of 70 warfighter /cm2 to illuminate the surface of an object at close range, you can use a radiation dose of 100 000 warfighter /cm2 for the following irradiation time: 100, 000 mu of baron/cm2 present 70 mu W/cm2 = 1429 s present 60 s ≌ 24 min. (2) disinfection of indoor air: 1) indirect lighting method: the first choice is the high-intensity ultraviolet air sterilizer, which not only has reliable disinfection effect, but also can be used when someone is indoors. Generally, the disinfection can be achieved after starting up for 30min. 2) direct illumination method: under the condition of no one indoors, uv lamp can be used for direct irradiation by hanging or mobile type. When indoor suspension uv disinfection is adopted, the number of indoor uv disinfection lamps (30W uv lamp, with the intensity of > 70w /cm2 at 1.0m) installed is no less than 1.5w per m3 on average, and the irradiation time is no less than 30min. (3) for disinfection of water and other liquids, internal or external water irradiation can be used. When internal water irradiation is used, the ultraviolet light source should be equipped with quartz glass protective cover. No matter what method is adopted, the thickness of the water layer should be less than 2cm. The water must meet the national standard after disinfection. Precautions for using uv lamps (1) according to appendix I sterile drugs of the 2010 edition of drug production quality management standard, uv disinfection shall not be used instead of chemical disinfection. (2) in the process of use, should keep the surface of the uv lamp clean, generally every two weeks with alcohol cotton ball wipe once, found that the surface of the lamp has dust, oil, should be wiped at any time. (3) when disinfecting indoor air with uv lamp, the room should be kept clean and dry to reduce dust and water mist, the temperature is lower than 20℃ or higher than 40℃, and the irradiation time should be appropriately extended when the relative humidity is more than 60%. (4) when the surface of articles is disinfected with ultraviolet radiation, the surface should be exposed to direct ultraviolet radiation, and the radiation dose should be sufficient. (5) the ultraviolet light source should not be irradiated to people, so as not to cause damage. (6) the ultraviolet ray intensity meter shall be calibrated at least once a year.

Since COVID-19 outbreak, personal protective masks, including general surgical masks and medical care mask) are highly attention, and become the epidemic prevention and control of the standard, in the production of masks, surgical masks must be in strict accordance with the relevant standard to production and disposable respirators, strictly in accordance with medical supplies, disinfection procedures to parse and disinfection of masks, can put into market.Ultraviolet germicidal lamp help surgical mask disinfectCurrent mask manufacturing enterprises are generally of the mask by ethylene oxide sterilization, and after disinfection, there will be a part of the ethylene oxide residues in the surface of the mask, ethylene oxide is a kind of toxic carcinogens, in the use of ethylene oxide sterilization of masks after disinfection, often have to pass a resolution for 14 days, this creates some areas remain masks the shortage of medical material. The following is a kind of effective sterilization method for the sterilization of masks: ultraviolet germicidal lamp sterilization. Sterilization mechanism of ultraviolet germicidal lamp: 1. Promote the death of microorganisms due to the loss of DNA conversion ability. 2. Destroy the amino acids of the bacterial proteins, and make the bacterial proteins photolysis and denaturation. 3. The activity of oxidase in bacteria was reduced, and the oxidation ability was lost. 4. Ionize the oxygen in the air to produce ozone with a strong bactericidal effect. Application of ultraviolet germicidal lamp in medical environment. The use of ultraviolet lamp to sterilize the air in the hospital has a history of decades, the use of static air direct illumination method and moving air disinfection method combined to treat the disinfection space and facility object surface for standard safe and clean disinfection. Among them, the work of the flowing air sterilizer is to sterilize the air through the indoor air circulation, so as to achieve the purpose of disinfection of the whole indoor air. The structure of this kind of disinfecting machine mostly takes the shell of indoor machine that USES household air conditioning. Monitoring the intensity of ultraviolet germicidal lamp tube is the key to ensure its disinfection effect. Methods for monitoring the intensity of ultraviolet germicidal lamp tubes: (1) By uv intensity Measurement: after the ultraviolet lamp is irradiated for 2 minutes, the ultraviolet intensity meter is placed in the center of the ultraviolet lamp, which is 1m vertical, for irradiation until the instrument pointer does not move, that is, the intensity value of the ultraviolet lamp. (2) Use the uv intensity and disinfection dose indicator card: place the card at the center of 1m from the uv lamp and point one side of the design towards the lamp. Irradiation 1 m in(should be accurate). The coating in the middle of the design changes from white to fuchsia, and the intensity of irradiation can be measured by comparing with the surrounding corresponding color blocks. The new lamp tube should be qualified as ≥100uw/cm2, and the old lamp tube should be replaced if it is less than 70uw/cm2. (3) Daily record of use time: the domestic lamp tube service period is generally 6000 hours when the specified period of use 3/4 should be replaced. Problems needing attention in the application of ultraviolet germicidal lamp tube: (1) The lamp tube surface should often (generally every 2 weeks 1 time) with alcohol cotton gently wipe, remove dust and oil above, in order to reduce the impact of ultraviolet penetration; (2) When disinfection, the room should be kept clean and dry, there should be no dust or water mist in the air, the temperature should be kept above 20℃, the relative temperature should not exceed 50%; (3) To prevent radiation damage, when using, if the person is in the room, should avoid facing the light source, and cover the exposed skin with clothes and hats; When monitoring the intensity, the light source should be observed with the back, and ordinary glass mask or sunglasses can be used to protect the eyes and facial skin. (4) Intensity monitoring, should be 3~6 months for a radiation intensity detection, found that the intensity of the lamp should be replaced in time. Application range of ultraviolet germicidal lamp · disinfection of water bodies in food processing industry, including juice, milk, beverage, beer, practical oil, and water for all kinds of canned and cold drink products. · ultra-pure water for the electronics industry. · disinfection of water in hospitals and various laboratories, and disinfection of wastewater caused by high content of diseases. · application of water disinfection, including residential buildings, communities, office buildings, hotels, restaurants, water works, etc. · purification and disinfection of aquatic product processing, shellfish purification and disinfection of fish processing, etc. · military barracks and field water supply system. · urban sewage disinfection, the maximum treatment capacity can reach more than 1 million tons per day. · disinfection of swimming pools and other recreational water on water. · cooling water disinfection, including thermal power, nuclear power plant cooling water, industrial production cooling water, central air-conditioning system cooling water. · cooling water for biological, chemical, pharmaceutical and cosmetic production. · seawater and fresh water for seedling and breeding (fish, eel, shrimp, abalone, shellfish, etc.), the total treated water can reach more than 200,000 tons per day. · agricultural water disinfection, including greenhouse water, irrigation, etc. As an efficient, fast and pollution-free disinfection method, ultraviolet germicidal lamp has always been the first choice of disinfection measures in medical, drinking water, food and other professional fields, and was favored in the outbreak of COVID-19.