ពេលវេលា: 2020-04-21

For decades, scientists have been devoted to the research of UVC light for disinfection, especially when the UVC market is huge and the human pursuit of health is more important than ever before.

More and more reports indicate that UVC light products can kill viruses and bacteria higher than a 99.9% rate, which directly leads to the crazy purchase of UVC products.

But in fact, few people know exactly what UVC light is and whether UVC light is useful for sterilization.

បន្ទាប់យើងនឹងពន្យល់លម្អិត what UVC lights are, how they work, their precautions for use and some commercial applications ដើម្បីជួយឱ្យអ្នកមានការយល់ដឹងច្បាស់។

uvc light sterilization

Wha is UVC light?


រលកចម្ងាយចាប់ពី ៣៨០ nanometers (nm) ដល់ ៧៨០ nanometers (nm) ត្រូវបានគេហៅថាពន្លឺដែលអាចមើលឃើញខណៈដែលរលកពន្លឺដែលត្រូវបានគេហៅថាពន្លឺមើលមិនឃើញ។

Ultraviolet light is a type of invisible light ranging from 10 nm to 400 nm. And the function of UV light depends on the range of wavelength.

  • កាំរស្មី UV-A: ៣២០nm ដល់ ៤០០ nm

It makes up the majority of UV light reaching the Earth. And it can damage our skin.

  • កាំរស្មី UV-B: ២៨០ នមដល់ ៣២០ ន

វាអាចព្យាបាលជំងឺស្បែក។ ប៉ុន្តែការប៉ះពាល់ខ្លាំងពេកនឹងបណ្តាលឱ្យរលាកស្បែកដោយសារពន្លឺព្រះអាទិត្យនិងសូម្បីតែជំងឺមហារីកស្បែក។ ហើយមានតែ UVB តិចជាង ២% ប៉ុណ្ណោះដែលអាចទៅដល់ផែនដី។

  • កាំរស្មី UV-C: ២០០nm ដល់ ២៨០nm

It is particularly good at sterilizing. But its penetration ability is very weak. Before reaching the ground, all UVC light will be absorbed by ozone in the atmosphere. That means, standing under the sun is useless for sterilization.

  • In summary: UV light Rule


Function of UVC light

Related Knowledge: Which UV light is the best?

Because UVC light can be used for sterilization, coupled with the epidemic environment, the market demand for UVC products can be described as Crazy now.

ហើយតម្លៃទីផ្សារក៏កើនឡើងពី ១៤០,០០០,០០០ ដុល្លារអាមេរិកដល់ប្រមាណ ៥០០,០០០,០០០ ដុល្លារអាមេរិក។

The big question right now may be how does UVC light work and can it kill viruses & bacteria?

How does UVC light work?

Before the deep study of UVC light, I thought all sunlights have the sterilization effect. Bacteria and viruses will be killed by "sunburn" or heat.

But that's not the truth.

  • Sterilization Principle of UVC light

In fact, UVC light will destroy the DNA or RNA of the bacteria & viruses, without the use of chemicals, making them inactive and unable to reproduce.

Since the lifespan of single bacteria & viruses is very short, once they lose the reproduce ability, it means death. So the purpose of sterilization has been achieved.

In scientific research, it has been found that UVC light can use very little time to finish the disinfection process and make most microbes reduction up to 99.99%.

Research of UVC light

Based on this information, UVC light is believed to be quiet effective at killing viruses and bacteria.

However, the vitality of different viruses and bacteria are different. Some bacteria&viruses may be injured once they are exposed to UVC light, while others are not.

If the UV dose is insufficient, some viruses will only temporarily lose activity, and then slowly repair their own structure.

  • Special requirements of UVC lights

At present, there are no specific figures to show how much UV dose flu viruses needs to be killed. Maybe 1,085 mJ / cm2 or 3,640 mJ / cm2 . Anyway, a huge number.

You may be wondering if we stand under the sunlight containing UVC light, can we be disinfected by it?

Unfortunately, the answer is no. Although the sterilization ability of UVC light is extremely strong, the penetration ability to objects (including air) is extremely weak. Before reaching the ground, all UVC light will be filtered out by ozone in the atmosphere.


Please pay attention to the fact that most UV lamps on the market are only designed to meet the common standard, that is, 40mJ / cm2 UV dose required for a 99.99% inactivation rate.

Study result of UVC light

Further considering the decay of UVC light in the air, those lamps make no sense for disinfection.

កុំងាយជឿពាក្យរបស់ក្រុមហ៊ុនខ្លះថា "យើងអាចសម្លាប់មេរោគនិងបាក់តេរី" ពេលខ្លះវាគ្រាន់តែជាភាសាទីផ្សារប៉ុណ្ណោះ។


Are ultraviolet lamps containing uvc light safe?

Although UVC light can indeed kill viruses and bacteria, there are various problems with household ultraviolet disinfection lamps on the market:

(១) ចង្កៀងមាប់មគប្រើកាំរស្មីអ៊ុលត្រាវីយូមានទំហំធំ (យ៉ាងហោចណាស់ ៤០ សង្ទីម៉ែត្រឬខ្ពស់ជាងនេះ) ប្រសិទ្ធភាពទាប។ ប្រភពពន្លឺ LED 1W អាចគ្របដណ្តប់លើផ្ទៃដីត្រឹមតែ ១ ម៉ែត្រការ៉េ។

(២) ប្រភពពន្លឺនៃអំពូលបាញ់កាំរស្មីអ៊ុលត្រាវីយូភាគច្រើនមានផ្ទុកជាតិបារតដែលជាផលអាក្រក់ដល់បរិស្ថាននិងសុខភាពប្រសិនបើបញ្ចេញ។

(៣) ចង្កៀងមាប់មគប្រើកាំរស្មីអ៊ុលត្រាវីយូភាគច្រើនជាចង្កៀងវិសាលគមរួមទាំងកាំរស្មីយូវីអេសអេយូអេនិងយូប៊ីប៊ីដែលទំនងជាផលិតអូហ្សូនដែលនាំឱ្យមានរោគសញ្ញាដូចជាអស់កម្លាំងក្អកតឹងដើមទ្រូងចង្អោរនិងបាត់បង់ការចងចាំ។

Applications of UVC light

From this perspective, the main application scenarios of UVC light should be industrial types to maintain safe.

Applications of uvc light

To make better use of UVC light, we have developed a new lighting technology, which can make the UVC energy in a very small size with 3.5mm x 3.5mm without mercury.


(១) ផ្ទៃ


(៣) ទឹក

Mercury-free UVC light is a clean and safe water disinfectant, UVC LED based solutions tackle these pathogens without impacting the water's smell, taste or mineral contents.


(២) អាកាស

ឧបករណ៍បន្សុតខ្យល់ដក ៩៩,៩៧% នៃភាគល្អិតពីខ្យល់ទោះយ៉ាងណាតម្រងមិនយកមីក្រូសរីរាង្គបង្ករោគតូចៗចេញដូចជាផ្តាសាយទេ។


How to use UVC light

All in all, UVC light can indeed kill viruses and bacterial if we choose the right system for specific applications.

អត្ថបទដែលទាក់ទង: ការណែនាំរបស់អ្នកទិញចុងក្រោយអំពីការទិញអំពូលកាំរស្មីយូវីរបស់អ្នក