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Frequently Asked Questions About UVC

Views: 0     Author: Zayn     Publish Time: 2022-04-15      Origin: Site

You can find common answers about UVC sterilization here. Of course, we welcome any questions you may have and are happy to answer them. Below is our contact information, you are welcome to use any form of email or phone.

Outline

1. Can I put UVC fixtures in my home?

2. Do germicidal lamps kill viruses?

3. What is UVGI and how does it work?

4. Can Ultraviolet Light Kill Coronavirus (Caution Required)?

5. Will germicidal UV take care of mold?

6. How often do the lamps need to be replaced?

7. Should UVC lamps be cleaned?

8. How much intensity do I need to kill certain organisms?

9. Can germicidal lamps be turned on and off continuously?

10. How do germicidal lamps kill?

11. How hot do the lamps get?

12. To be effective, how close to the surface do the lamps need to be?

13. Do I need ozone-producing lamps?

14. When do I need to use ozone-producing lamps?

15. What damage will the lamps do to me?

16. What effects does UV light have on surrounding materials?

17. Can germicidal UVC penetrate surfaces or substances.

18. How do you determine the square footage that one germicidal UVC lamp will cover?

19. Do the lamps need a ballast to work?

20. How are UVC lamps used to disinfect the air?

21. What safety precautions should be taken when using germicidal UVC?

22. Are UV-C air purifiers effective?

23. Do UV air purifiers work on viruses?

24. Can LED produce UV-C light?

25. Can UV sterilizer damage my phone?

26. How much does a UVC light cost?

27. How can I tell a fake UVC light?

28. Is UV and blacklight the same?

29. How do you calculate UV exposure time?

30. How long should I run UV sterilizer?

31. What are the disadvantages of using UV light for sterilization purposes?

32. How is UV-C calculated?

33. How long does it take for UV light to sanitize the water?

34. How can I use uvc dosimeter strips

35. What are the well-known brands that produce UVC products

36. What happens if my skin is exposed to UVC?

37. Can UVC pass through walls?

38. How is UVC exposure time calculated?

39. Do prescription glasses block UVC?

40. Is UVB or UVC more harmful?.

41. Can UV light damage plants?

42. What is UV-C filter?

43. Is UV-C filter safe?

44. Can UV LED Strip disinfect?

45. Why is ultraviolet radiation commonly used in sanitizing Hospital in operating room?

46. Is an air purifier with UV better?

47. Is UV light effective against fungi?

48. UV-C light to kill mites?

49. What is UV-C LED?

50. Can LED emit UVC?

51. How long do UVC LEDs last?

52. Is germicidal uvc led strip useful?

53. Can uv led strip be used in water?

54. Which UVC strips are most widely used in the US

55. Is 254nm is the best uv led ?

56. Why uvc 222nm led strip is widely used in the world?

57. How about uvc led strip price?

58. OSRAM UVC LED vs Philips UVC led, which is better?

59. What are the types of UV light LED modules?

60. What does the C mean in UVC?

61. What is the difference between UV and UVC?

62. Does UVC produce ozone?

63. Is ozone from UVC light harmful?

64. ow much ozone does a UVC lamp produce?

65. What is the difference uv light with ozone vs without ozone ?

66. What is UVC output?

67. what's the connection between uv light sterilization time and distance?

68. How can I protect my skin from UVC?

69. Can UVC pass through clothes?

70. does uvc cause cancer

71. What is the smell after using UVC light?

72. Does UVC light have a smell?

73. Does UVC eliminate odor?

74. What is the difference between UVA UVB and UVC light?

75. Is Philips UV light safe?

76. What is a UVC system?

77. What is the difference between uvgi vs uvc ?

78. Where is a UVC placed?

79. What is a uvc rigid led bar

80. What does UVC radiation stand for?

81. which type of uv radiation is most harmful?

82. what is the difference between uva uvb and uvc radiation

83. is uvc radiation dangerous

84. Is UVC short wavelength?

85. What is the UV Index?

86. Is a UV Index of 2 safe?

87. How do you use a UV sterilizer box?

88. Can UV sterilizer damage phone?

89. What does a portable deep UVC sterilizer do?

90. Do UVC test cards work?

91. What is uva uvb uvc meaning

92. Which is worse UVA UVB or UVC?

93. difference between uva uvb and uvc?

94. Is UV and UVC light the same?

95. What is uvc wavelength range

96. Which uvc wavelength to kill bacteria

97. Can UV-C purify water?

98. How long does it take for UV light to kill bacteria in water?

99. Is UV light good for drinking water?

100. What UVC products do we offer at Suntech?


1. Can I put UVC fixtures in my home?

Yes. Ultraviolet fixtures can be used in home safely, but it is necessary to avoid direct exposure of ultraviolet lamps to sensitive parts such as the skin surface and eyes of the human body to avoid radiation problems.


2. Do germicidal lamps kill viruses?

Yes. Germicidal UVC lamps (wavelengths between 200 nm and 280 nm) can kill up to 99.9% of viruses, airborne bacteria, molds and spores.


3. What is UVGI and how does it work?

Ultraviolet energy is part of the electromagnetic spectrum. Ultraviolet rays of the electromagnetic spectrum lie between X-rays and visible light. It works because UVC wavelengths are easily absorbed by the DNA and RNA of microorganisms. UVGI disrupts the structure of microbial replication DNA by forming thymine dimers, resulting in the inability of microorganisms to reproduce.



4. Can Ultraviolet Light Kill Coronavirus (Caution Required)?

Ultraviolet rays can kill coronaviruses, mainly using 240~280nm wavelength ultraviolet rays, irradiating the disinfection area for 15-35 minutes. Ultraviolet rays are mainly used for disinfection of rooms and objects. Ultraviolet rays can also damage human cells, so do not irradiate the body when using it.


5. Will germicidal UV take care of mold?

Yes. Germicidal UVC lamps will kill up to 99.9% of mold and help prevent mold growth.


6. How often do the lamps need to be replaced?

It can be replaced in about 500 hours.  The UV lamp can maintain enough energy for sterilization during its service life. During this period, its energy will gradually decay to no ability to sterilize and sterilize. The working temperature of the UV lamp will affect the efficiency of the lamp.


7. Should UVC lamps be cleaned?

During use, the surface of the UV lamp should be kept clean. Generally, wipe it with a paper towel or an alcohol cotton ball every two weeks. If there is dust or oil on the surface of the lamp tube, it should be wiped at any time. This will also help maximize bulb life.


8. How much intensity do I need to kill certain organisms?

Under normal circumstances, if it is in the ultraviolet intensity range, the ultraviolet sterilization lamp can kill the inhaled virus infection in a few seconds, and it takes about ten seconds for some bacteria and viruses to kill.

At this stage, all ultraviolet disinfection lamps are gas discharge lamps. This type of ultraviolet disinfection lamp has a startup time, generally 3-5 minutes to achieve the best effect of sterilization, so it takes more than 5 minutes for all normal sterilization.

If the surface of the object is sterilized, such as drying a quilt, it is best to sterilize the tableware in the restaurant kitchen in the middle of 15-30 minutes.

If you want to kill bacteria and viruses in the air, the disinfection time should be controlled between 30-120 minutes according to the total area of the house.


9. Can germicidal lamps be turned on and off continuously?

"Cold cathode" lamps are instant-on, using a large cylindrical cathode instead of a coiled filament, so the lamp has a long life that is not affected by the frequency of starting.

Slim" lamps are also instant start and are available in low ozone, high ozone and very high ozone types. Their lamp life is determined by electrode life and number of starts.

"Hot Cathode" or Preheat/Hot Cathode, lamps typically use standard off-the-shelf fluorescent ballasts, and frequent starts/stops can shorten the bulb life of hot cathode lamps.


10. How do germicidal lamps kill?

The use of ultraviolet light of appropriate wavelength (185-254 nm) can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in microbial cells, causing growth cell death and/or regenerative cell death, achieving sterilization disinfection effect.


11. How hot do the lamps get?

Ultraviolet light is a cold light lamp, and there is very little heat in actual use.


12. To be effective, how close to the surface do the lamps need to be?

When using an ultraviolet lamp to irradiate and disinfect the surface of an object, it is generally required that the distance of the lamp tube to be no more than 1 meter from the surface.  The distance from the ultraviolet sterilization and disinfection lamp to the roof should not be greater than 1.5m, the distance from the ground should not be greater than 2.5m, and the distance from the object to be disinfected should be about 1m.


13. Do I need ozone-producing lamps?

Some germicidal UVC lamps produce ozone. Unless there are shaded areas that UVC light cannot reach. Ozone can travel in the air to places that UVC cannot directly reach.


14. When do I need to use ozone-producing lamps?

Places not exposed to UV rays. It should use ozone to sterilize where UV rays cannot reach.


15. What damage will the lamps do to me?

If the bare skin is irradiated by this type of ultraviolet light, it will cause redness, swelling, itching, and scaling in mild cases; in severe cases, it may even cause canceration and skin tumors. At the same time, it is also an "invisible killer" of the eyes, which can cause inflammation of the conjunctiva and cornea, and long-term exposure may lead to cataracts.


16. What effects does UV light have on surrounding materials?

Long-term exposure to germicidal UVC light in plastics can shorten the shelf life of plastics by about 10%.

Plant life may wither. Transient dyes and colors may fade with prolonged exposure to UV light.


17. Can germicidal UVC penetrate surfaces or substances?

Germicidal UVC sanitizes only effects on the surfuces of products.


18. How do you determine the square footage that one germicidal UVC lamp will cover?

According to the "Disinfection Technical Specifications" 3rd Edition, Volume 2 (Hospital Disinfection Specifications) promulgated by the Ministry of Health: "30W ultraviolet disinfection lamps, the radiation intensity at the vertical 1M point is higher than 70uw/cm2, and the average per cubic meter is not less than  1.5W." According to this regulation, we can calculate that the disinfection area of 30W ultraviolet disinfection lamp is 20 square meters.


19. Do the lamps need a ballast to work?

Yes. A germicidal lamp and ballast combination is required to work. But a constant current driver is required. to stabilize the current flowing through the LED. Prevent current LED from overheating and damage.


20. How are UVC lamps used to disinfect the air?

The first method is high-altitude irradiation. Suspend germicidal UVC lamps in room ceiling fixtures. The eye does not see the light directly.

The second method is air disinfection. Put the germicidal uvc lamp inside the ventilation system duct.


21. What safety precautions should be taken when using germicidal UVC?

During installation, the installer should wear goggles.

In daily use, people should leave after turning on the germicidal lamp.


22. Are UV-C air purifiers effective?

Yes. A UV-C air purifier with Hepa filter that eliminates up to 95% of viruses and bacteria.



23. Do UV air purifiers work on viruses?

Yes, UV air purifiers with UV lamps are able to kill airborne microorganisms such as fungi, bacteria, viruses, etc.


24. Can LED produce UV-C light?

No. The Led uses a cold light source with no UV and IR in the spectrum.


25. Can UV sterilizer damage my phone?

Yes. Although ultraviolet rays can disinfect mobile phones in an all-round way, they will also have a certain impact on mobile phones. Under the irradiation of ultraviolet rays for a long time, the casing of the mobile phone will age to varying degrees. In severe cases, there may be blurring and other situations.


26. How much does a UVC light cost?

There is a wide range of products on the market right and they vary greatly in cost. A UV-C light can cost you from $150 to $20,000.


27. How can I tell a fake UVC light?

The most reliable way to distinguish is to use a 254-nanometer probe of an ultraviolet irradiance meter to measure. The same power, the highest ultraviolet intensity at 254 nanometers is the ultraviolet germicidal lamp made of quartz glass. This is followed by high boron glass UV lamps, ordinary glass and phosphor-coated lamps have zero UV intensity at 254 nm.

In daily use, ozone is generated when using either an ozone UV germicidal lamp or an ozone-free UV germicidal lamp. You can turn on the UV lamp for a while (5-10 minutes), and then smell the smell in the air. The real UV germicidal lamp will have a smell like after a thunderstorm or a smell similar to rotten eggs.


28. Is UV and blacklight the same?

No. Ultraviolet lamps are ultraviolet light sources that contain various wavelengths, while black light lamps refer to long-wave ultraviolet lamps.


29. How do you calculate UV exposure time?

According to the irradiance intensity of the UV light source, the required irradiation time can be calculated.

For example, use a UV surface sterilizer with an irradiation intensity of 70 uW/CM2 to irradiate the surface of the object at close range; the selected irradiation dose is 100000 uW.s/CM2; the required irradiation time is: 100000 uW.s/CM2 ÷70 uW/CM2=24 minutes.


30. How long should I run UV sterilizer?

The normal use time of the ultraviolet disinfection lamp is between 30 minutes and 60 minutes. During the use process, the doors and windows should be closed first to keep a closed state.



31. What are the disadvantages of using UV light for sterilization purposes?

Long-term exposure to ultraviolet radiation can lead to changes in DNA in cells, the function of the human immune system declines, and the human body's ability to resist diseases declines.



32. How is UV-C calculated?

UV Dose = UV Intensity (μW/cm² ) x Exposure Time (seconds)

Exposure time is how long the UV light works and the result will be a value expressed in  μWSec/cm².


33. How long does it take for UV light to sanitize the water?

Ultraviolet water purification is the water flow through the ultraviolet lamp to irradiate the water, so as to achieve the purpose of disinfection. In fact, it only takes a few tenths of a second. Basically, the water has achieved the disinfection effect through the ultraviolet lamp, so it does not need to be irradiated for a long time.

It is best not to store the UV-sterilized water for too long and not to place it in a bright place because UV disinfection does not kill microbes, but destroys its DNA structure so that it does not have reproductive function within two hours after disinfection. Without exposure to light, it is easy to cause photoreactivation.


34. How can I use uvc dosimeter strips

Place a card horizontally and vertically in a determined location, exit the room, and run the disinfection system.  Changes in color are recorded and the exposure to toxin disinfection cycle is performed within 24 hours for the most accurate results.


35. What are the well-known brands that produce UVC products

DOWA Japan\ nitride semiconductors Japan \nikkiso Japan

The first is China's sunsun, the second is China's Xuelite, and the third is China's yee.


36. What happens if my skin is exposed to UVC?

UVC is very harmful to the human body. Short-term exposure can burn the skin. Long-term exposure or high-intensity exposure can also cause skin cancer.


37. Can UVC pass through walls?

UVC penetration ability is very weak, ordinary plastic and glass can block.


38. How is UVC exposure time calculated?

The exposure time to calculate the UV light is calculated from 20 to 30 seconds from the time the UV lamp is turned on and the UV light is delivered to the surface of products.



39. Do prescription glasses block UVC?

Glasses have very low UV protection. At present, the anti-ultraviolet ability of lenses on the market is generally below 10%, that is, it can filter out about 10% of the ultraviolet rays in the sun. This number has little effect on the eyes, which are actually imperceptible and not much protective.



40. Is UVB or UVC more harmful?

Ultraviolet rays also have different penetrations on the skin: UVB can reach the epidermis of the skin, while UVA can reach the dermis of the skin. Short-term damages include melanin deposition, darkening of the skin, dark spots, etc. It is the ultraviolet rays that make your skin darker.

Long-term damage: Because UVA can penetrate into the dermis, damage cell DNA, collagen damage, accelerate skin aging, and even cause skin cancer UVB damage to the skin:

Short-term: sunburn, erythema, edema, pain and even blisters are short-term damage to the skin by UVB.

Long-term damage can also damage cellular DNA.


41. Can UV light damage plants?

Since bacteria lamps can kill bacteria, they can also kill normal cells. When plants are irradiated by germicidal lamps for a long time, normal cells will die, and leaves will naturally drop.


42. What is UV-C filter?

A UV filter is usually a clear filter attachment. It's the UV rays used to filter out the UV rays, which can make things look hazy and bluish.


43. Is UV-C filter safe?

Yes,it s safe. When air purifiers use UV light, which kills air-filtering microbes, mostly UV-C filter do not contain ozone and won’t damage the lungs.


44. Can UV LED Strip disinfect?

Yes. UV LED Strip can disinfect. It works by reducing bacterial populations by preventing bacterial and viral DNA replication.


45. Why is ultraviolet radiation commonly used in sanitizing Hospital in operating room?

The reproduction of organisms requires the replication of DNA or RNA. This process is easily interfered and damaged by external adverse factors. Ultraviolet rays can cause protein denaturation and lead to the inactivation of DNA or RNA replicase.

Microorganisms are single-celled organisms (note: viruses are not included in the list of organisms), and there is no specific structure to block UV damage, so their reproduction will be inhibited under UV exposure.

Therefore, hospitals often use ultraviolet rays to disinfect wards and operating rooms.


46. Is an air purifier with UV better?

The air purifier has two effects, one is CADR, that is, the amount of clean air; the other is to remove formaldehyde. The advantage is that it is efficient and harmless to the human body. The disadvantage is that the filter element must be replaced regularly.

Ultraviolet disinfection does not need to replace consumables, but it has a single function, which can only sterilize, but cannot remove formaldehyde and purify the air. The disadvantage is that ultraviolet light is harmful to the human body, long-term exposure will cause skin cancer, and ozone will be generated after a long time of opening, and the smell is relatively unpleasant.


47. Is UV light effective against fungi?

Ultraviolet lamps can kill fungi and can be used according to the following conditions:

1. Ultraviolet lamps must be in a closed space to play a role in disinfection.

2. The disinfection range of the ultraviolet lamp is within 1 meter around it.

3. The working principle of ultraviolet lamp disinfection is to use the high energy of the ultraviolet spectrum to destroy the structure of microorganisms, which has a strong bactericidal effect, so as to achieve the purpose of disinfection.


48. How long does it take for UV-C light to kill mites?

This depends on 1. The ultraviolet radiation intensity of the product used. It is recommended to use high-purity quartz lamps (the lamps using high-purity quartz have much higher UV penetration than high-boron lamps). 2. The place to sterilize and remove mites

Sterilize and remove mites on the surface of objects, such as drying the quilt for 15 minutes (Jixiangbao UV disinfection lamp 38 watts).

Space sterilization can be done within 15-120 minutes according to the room area, and the effect is similar for more than two hours and two hours.


49. What is UV-C LED?

UV LED is a light-curing machine, which has a good drying and curing effect on light-curing resin. UV in UV LED means violet light, LED is light emitting diode and chip, together UV LED is violet LED. UV LED has a wide range of uses, ranging from home decoration to electronic components, all of which have the shadow of UV LED applications.



50. Can LED emit UVC?

No. LED uses a cold light source, with little glare, no radiation, and no harmful substances are generated during use.


51. How long do UVC LEDs last?

UVC LEDs on the market today are usually 5,000 hours to 9,000 hours of life. In daily use, if you take care of it regularly, it will have better results, and you should wipe it in time when you encounter dust and oil stains.


52. Is germicidal uvc led strip useful?

UVC LED can be said to have the best sterilization effect at present. It can completely kill all harmful bacteria and viruses known so far. Compared with chlorine gas sterilization, mercury lamp sterilization, ozone sterilization and high temperature sterilization, UVC LED sterilization It is easy to use, safe and environmentally friendly, has good stability, and has a high sterilization rate. It is completely illuminated by LED lamps, without adding any chemical substances, and without the threat of mercury and residual chlorine.


53. Can uv led strip be used in water?

Led strips with IP68 can be used underwater 1m.


54. Which UVC strips are most widely used in the US

254 nm UVC strips are often used in the United States. Because it can be used in many aspects of hospitals and home schools, such as sterilization of doctors, sterilization of families, etc.


55. Is 254nm is the best uv led?

Yes. Ultraviolet sterilization is to destroy and change the DNA (deoxyribonucleic acid) structure of microorganisms through the irradiation of ultraviolet rays, so that the bacteria immediately die or cannot reproduce, so as to achieve the purpose of sterilization. What really has bactericidal effect is UVC ultraviolet rays, because the C-band ultraviolet rays are easily absorbed by the DNA of the organism, especially the ultraviolet rays around 253.7nm.



56. Why uvc 222nm led strip is widely used in the world?

The deep ultraviolet wavelength of 200-280nm has a bactericidal effect and has been widely used in sterilization. However, UVC radiation is harmful to human skin due to its penetrating power. However, Kobe University and Yuzhiwang research found that in terms of the ability to destroy bacteria on the skin, deep ultraviolet light with a wavelength of 222nm and 254nm has the same bactericidal effect, and UVC radiation of 222nm does not cause skin cancer.


57. How about uvc led strip price?

Depending on the size and use of different uvc led strip and different sized lamp beads, their prices tend to be different. The price per meter is about $3 to $30.


58. OSRAM UVC LED vs Philips UVC led, which is better?

Osram is relatively good, and its lamps are self-packaged with solid-state semiconductor device chips and have high luminous efficiency.



59. What are the types of UV light LED modules?

There are 3 typesof UV light LED modules.

UV-A is similar to the current LED lighting, mainly to replace the existing UV products, including power saving, long life and other characteristics are the growth kinetic energy to promote the replacement, the typical applications of UV-A band are UV curing and UV inkjet printing , on behalf of the wavelength of 395nm, 365nm, widely used in printing, packaging, advertising, building materials, decoration, electronics, home appliances, optical fiber, automotive and other industries.

UV-B is more commonly used in the medical industry. UV-B has an erythematous effect on the human body and can promote the metabolism of minerals and the formation of vitamin D in the body. However, long-term or excessive exposure will tan the skin and cause redness, swelling, and peeling. . Used in, for example, UV health lamps, plant growth lamps, etc.

Due to its short wavelength and high energy, ultraviolet rays in the UV-C band can destroy the molecular structure of DNA or RNA in the cells of microbial organisms (bacteria, viruses, spores and other pathogens) in a short time, making the cells unable to regenerate themselves. The ability to self-replicate will be lost, so UV-C band LEDs are widely used in sterilization and disinfection of water and air.


60. What does the C mean in UVC?

C means ultraviolet wavelengths from 200 to 275 nanometers. According to the wavelength, ultraviolet rays are divided into 3 types. They are UVA, UVB and UVC.


61. What is the difference between UV and UVC?

UV germicidal lamps are all UVC germicidal lamps because only the latter has a good sterilization effect, so UV mercury lamps and UV LEDs basically use 254nm for sterilization.


62. Does UVC produce ozone?

No, UV-C light does not produce ozone. However, there are two types. Main line 254nm (without ozone) and main line 185nm (with ozone). The shorter Ultraviolet-V (185 nanometers) wavelength of UVV light generates ozone. This occurs because UVV light reacts with oxygen to break it into atomic oxygen, a highly unstable atom that combines with oxygen to form Ozone.


63.Is ozone from UVC light harmful?

UVC has a bactericidal effect, but its penetrating ability is very poor, so there is no need to worry about radiating to the human body.


64. How much ozone does a UVC lamp produce?

The efficiency of ozone production (the absorption of UV radiation by oxygen) is highly wavelength dependent, with a maximum efficiency around 160 nm. This also means that the ozone produced by radiation depends only on the spectrum (and power) of the lamp.The general limit for ozone exposure for 8 hours is a maximum concentration of 0.1 ppm. The FDA sets the limit for prolonged exposure at 0.05 ppm (=50 ppb). Most people can detect ozone by smelling the air in concentrations of about 0.01-0.04 ppm.


65. What is the difference uv light with ozone vs without ozone ?

Ultraviolet sterilization can only sterilize the place where it is irradiated.

Ozone is a gas that can diffuse to any location to sterilize. With ozone can double sterilization effect. Ozone also works well to remove odors.


66. What is UVC output?

Ultraviolet output means using the specified wavelength to kill bacteria in the air. It uses short-wave ultraviolet light to kill or inactivate microorganisms by damaging nucleic acids and disrupting their DNA, rendering them unable to perform vital cellular functions.


67. what's the connection between uv light sterilization time and distance?

At a distance of 1 meter from the lamp, the intensity should be above 70. The time is generally 20-30 minutes. The disinfection area of 30 watts of ultraviolet rays is about 16 square meters.


68. How can I protect my skin from UVC?

Leave the room quickly after turning on the UVC light. Keep the lights on.


69. Can UVC pass through clothes?

The fabric itself cannot penetrate, but since it is a fabric, there are gaps, and the gaps can penetrate.


70. does uvc cause cancer

Ultraviolet rays can cause cancer, and long-term exposure to excessive exposure most often causes skin malignancies.


71. What is the smell after using UVC light?

Ultraviolet light itself has no smell. If it is because the ultraviolet light is turned on, it is because the ultraviolet light can ionize the oxygen in the air into ozone. The ozone generator uses a purple light tube to produce ozone. The ozone has a slight fishy smell taste.


72. Does UVC light have a smell?

Ultraviolet light has a smell, that is because the ultraviolet light can ionize the oxygen in the air into ozone.


73. Does UVC eliminate odor?

Ultraviolet ozone lamps can remove formaldehyde. Ozone has a strong and odor removal function. It is feasible to remove formaldehyde and other odors in new houses, but it must be noted that humans and machines cannot coexist when using an ozone machine.


74. What is the difference between UVA UVB and UVC light?

The wavelength of the uva band is 320-420nm, also known as the long-wave black spot effect ultraviolet. It has strong penetrating power and can penetrate most transparent glass and plastics. Can penetrate most clear glass and plastics. More than 98% of the uva contained in sunlight can penetrate the ozone layer and clouds to reach the earth's surface. Uva can directly reach the dermis layer of the skin, destroy elastic and collagen fibers, and tan the skin.

UVB, the wavelength is 275-320nm, also known as medium wave ultraviolet. The shorter wavelengths are absorbed by transparent glass, and less than 2% of the UVB contained in sunlight can reach the Earth's surface. UVB rays can promote mineral metabolism and the formation of vitamin D in the human body, but excessive exposure can cause skin redness and peeling.

UVC, the wavelength is 200-275nm, also known as short-wave germicidal ultraviolet. It has the weakest penetration and cannot penetrate most clear glass and plastics. The short-wave ultraviolet rays contained in sunlight are almost completely absorbed by the ozone layer. Short-wave ultraviolet rays are very harmful to the human body. Short-term exposure can burn the skin, and long-term or high-intensity exposure can lead to skin cancer.


75. Is Philips UV light safe?

safe. Philips uv lamps have passed CE certification, and the power and voltage are stable.


76. What is a UVC system?

The principle of ultraviolet sterilization and disinfection system adopts modular design. The size and dosage of the module are customized according to the treatment capacity and water quality. The disinfection module is placed in the disinfection channel, and the other components on the shore and the PLC control unit constitute the disinfection system.

The ultraviolet sterilization and disinfection system generally consists of seven parts: 

① UV lamp module; 

② Junction box; 

③ Ballast control cabinet; 

④ PLC main control cabinet (human-machine interface box); 

⑤ Pneumatic device and air compressor; 

⑥ Lifting device; 

⑦ Overflow weir and related auxiliary accessories, etc.


77. What is the difference between uvgi vs uvc ?

UVC refers to the ultraviolet range below 280nm, and energy below 200nm is sometimes referred to as "vacuum ultraviolet" because it is easily absorbed by molecules, or propagated through a vacuum. UVGI has 2 definitions, one is the use of radiation in the wavelength range of 240nm to 280nm to kill or disinfect air, water and surfaces. Another is to sterilize air and surfaces using light with UV wavelengths in the germicidal range (200-320nm).


78. Where is a UVC placed?

The UVC should be placed in the center of the room, and the items that need to be disinfected must be fully exposed to the UV lamp. Before use, in addition to turning on the power supply and pressing the switch, the items in the room should be displayed in advance to avoid blocking each other. Clothing, bedding and other knitted items that need to be disinfected should be laid as flat as possible to be completely sterilized.


79. What is a uvc rigid led bar

The LED chip is assembled on the PCB hard board, and because its shape resembles a tape, it is called a LED hard light strip.


80. What does UVC radiation stand for?

It has physiological effects, can sterilize, disinfect, treat skin diseases and cartilage diseases. Ultraviolet rays have strong particle properties and can make various metals produce photoelectric effect.


81. which type of uv radiation is most harmful?

All UVC and most UVB radiation is absorbed by Earth's ozone layer, so almost all UV radiation received on Earth is UVA. Both UVA and UVB radiation affect health. Although UVA radiation is weaker than UVB, it penetrates deeper into the skin and is more stable throughout the year. Since UV radiation is absorbed by the Earth's ozone layer, it does not pose much of a risk.


82. what is the difference between uva uvb and uvc radiation

The difference between the three is the difference in wavelength and the difference in function. The main difference between UVC,UVA and UVB is sterilization function. UV-C is used for sterilization and disinfection while UVA and UVB can not.


83. is uvc radiation dangerous

No. All UVC radiation is absorbed by Earth's ozone layer.


84. Is UVC short wavelength?

Yes. Of the three types of UV radiation, UVC is the shortest.


85. What is the UV Index?

UV index is 0 to 2

A UV index between 0 and 2 means that the amount of UV rays in the sun's radiation is low, the risk of sunburn is low, and a sun hat is fine to wear when going out.

UV index of 3 to 5

This is a moderate level of UV radiation that can cause a sunburn in 30 to 45 minutes if you are outdoors without sun protection. Limit outdoor activities between 10 a.m. and 3 p.m.; use sunscreen with an SPF of at least 30 on exposed skin when going out; use sun hats, sunglasses, and sun-protective clothing to block UV rays.

UV index of 6 to 7

This is a high level of UV radiation, and without sun protection, the average person could get sunburned in 15 to 25 minutes. Avoid going outside between 10 a.m. and 3 p.m.; apply sunscreen with an SPF of at least 30 every two hours; use a sun hat, sunglasses, sun-protective clothing, or long-sleeved pants.

UV index of 8 to 10

Very high levels of UV radiation, it is possible to get sunburned within 10 minutes, don't go outside without strict protection.

UV Index>11

Try not to go outside, and every precaution should be taken to prevent sunburn, the level of UV rays that can damage unprotected skin within minutes.


86. Is a UV Index of 2 safe?

It means that the amount of UV rays in the sun's radiation is low and there is little risk of sunburn.


87. How do you use a UV sterilizer box?

Open the lid of the sterilization box and place the items in the bottom. Make sure it's not stuck or you won't be able to close the sterilization box tightly. Slowly close the lid to activate the UV light and begin disinfection.


88. Can UV sterilizer damage phone?

Although ultraviolet rays can disinfect mobile phones in an all-round way, they will also have a certain impact on mobile phones. Because mobile phones need to be sterilized regularly, if all of them are sterilized by ultraviolet rays, the mobile phone needs to be fully exposed to the ultraviolet light. Under the long-term exposure of ultraviolet rays, the casing of the mobile phone will age to varying degrees, and aging may occur. , In severe cases, there may be a flower screen and other situations. All in all, UV disinfection will damage the appearance of the mobile phone to a certain extent.


89. What does a portable deep UVC sterilizer do?

It can sterilize objects and can also be used when going out.


90. Do UVC test cards work?

Yes. The UV photosensitive card can distinguish different UV bands, including long-wave 365nm, short-wave 254nm and blue light 400nm. The detection card uses two materials to detect at the same time, and determines the wavelength parameter of the excitation light source by judging the change of the spectrum at different wavelengths.


91. What is uva uvb uvc meaning

UVA band, wavelength 320 ~ 420nm, also known as long-wave dark spot effect ultraviolet.

UVB band, wavelength 275 ~ 320nm, also known as medium wave erythema effect ultraviole.

UVC band, wavelength 200 ~ 275nm, also known as short-wave sterilization ultraviolet.


92. Which is worse UVA UVB or UVC?

There is no worse statement for these three. They have different bands and therefore use different ranges.


93.difference between uva uvb and uvc?

UVA band, wavelength 320 ~ 420nm, also known as long-wave dark spot effect ultraviolet.

UVB band, wavelength 275 ~ 320nm, also known as medium wave erythema effect ultraviole.

UVC band, wavelength 200 ~ 275nm, also known as short-wave sterilization ultraviolet.


94. Is UV and UVC light the same?

UV means ultraviolet light: including all wavelengths of ultraviolet light.

UVC refers to ultraviolet UVC band 200 ~ 275nm central wavelength 254nm.


95. What is uvc wavelength range

uvc wavelength range from 200nm to 275nm.


96. Which uvc wavelength to kill bacteria

254nm.


97. Can UV-C purify water?

UVC can be mainly used in water treatment, air purification, surface purification and other fields, effectively sterilizing for living and medical environments.


98. How long does it take for UV light to kill bacteria in water?

The time it takes for UV light to kill bacteria in water is related to the exposure dose (lamp power). For a room with a clear height of about 3 meters, the irradiation dose should generally be more than 1.5 watts/1 square meter (for example, a 20 square meter room with a clear height of 3 meters needs a 30W ultraviolet germicidal lamp). Under this irradiation dose, sterilization is generally required for 40 minutes, and a good sterilization effect can be achieved. Of course, the sterilization time can also be increased to meet some special requirements.


99. Is UV light good for drinking water?

Physical disinfection and chemical disinfection are currently commonly used disinfection methods. Physical disinfection is simply the use of ultraviolet radiation to achieve the purpose of sterilization. There are two methods of chemical disinfection. The first is chlorine disinfection, which is generally used in areas with centralized water supply. Moreover, chlorine disinfection can also be divided into free chlorine disinfection and compound chlorine disinfection, which are divided based on the principle of disinfection. Because the technology of chlorine disinfection is mature and stable, has strong bactericidal ability, long duration, and low cost, these advantages make chlorine disinfection a wide range of applications. For example, urban and rural centralized water supply plants use this method to disinfect.


100. What UVC products do we offer at Suntech?

We offer 10 products.

1.UVC LED bulb 265nm 275nm germicidal lamp for room disinfection

2.UVC Disinfection LED Module For Air Surface Sterilization

3.Germicidal UVC LED Strip 265nm ~ 278nm

4.250nm 254nm 255nm UVC Disinfection LED Module 24V

5.High Power UVC LED Chip 300mw 350mw 400mw

6.254nm 255nm Deep UVC LED Chip Diode 10mw ~ 15mw

7.Far UVC Led Light 207-220nm-222nm Far UV Led Chip

8.207nm 220nm 222nm Far UVC Led Chip Strip Light Inactivate Bacteria Without Harm Skin

9.Far UVC 222nm LED Tube Light

10.Germicidal UVC LED Bar Module Light With Quartz Lens 24V


Please click on the images in the table below to view product details.



Image

Wave-

length(nm)

Radiant flux

Radiant flux

Dimension L*W*H(mm)

Germicidal UVC LED Bar Module

Germicidal UVC LED Bar Module

265-285nm

15-20mw

280*60mm

250nm 254nm 255nm UVC Disinfection LED Module

250nm 254nm 255nm UVC Disinfection LED Module

250-255nm

300mw/m

280*40mm

UVC Disinfection LED Module

 

UVC Disinfection LED Module

265-278nm

20mw

240*40mm

UVC LED Bulb 265nm 275nm Germicidal Light

UVC LED Bulb 265nm 275nm Germicidal Light

265-278nm

900/1350mw

135×200mm

Germicidal UVC LED Strip

Germicidal UVC LED Strip

265-278nm

90mw

/

High Power UVC LED Chip

High Power UVC LED Chip

270-280nm

380.87 mW

45*65mm

Deep UVC LED Chip Diode

Deep UVC LED Chip Diode

254nm 255nm

10mw ~ 15mw

36*36mm

Far UVC Led Chip Strip Light

207nm-220nm-222nm-Far-UVC-Led-Chip-Strip-Light-Inactivate-Bacteria-Without-Harm-Skin-400-400

207nm 220nm 222nm

2.5mw

65*45mm

Far UVC Led Light 

Far UVC Led Light

207nm

220nm

222nm

2.5mw

36*36mm

Far UVC 222nm LED Tube Light

 

Far UVC 222nm LED Tube Light

222nm

/

28*120mm


UVC articles you may be interested in:


Disinfection-&-Sterilization-Standards-of-UV-Products-Application

Disinfection & Sterilization Standards of UV Products Application

Knowledge-and-application-of-UVC-ultraviolet-rays

Knowledge and application of UVC ultraviolet rays

Top-10-Things-to-Know-Before-Buying-a-UV-Black-Light-LED-Strip

Top 10 Things to Know Before Buying a UV Black Light LED Strip

UVA-UVB-and-UVC-Radiation---Everything-You-Need-to-Know

UVA UVB and UVC Radiation - Everything You Need to Know

What-is-UV-C

What is UV-C

UVA-VS-UVB-VS-UVC-Light

UVA VS UVB VS UVC Light


If you have any other question or other requirements, welcome to contract us, we would be glad to help you.


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Shenzhen Suntech Company Limited
 

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