40w 222Nm UV Teeb Module Far UV Teeb

NTA

1. Yooj yim rau kev sib xyaw

2. Ntshiab 222 nm

3. Ib puag ncig tus phooj ywg / mercury -dawb

4. Muaj kev nyab xeeb tshuaj tua kab mob

5. Dav kev khiav hauj lwm kub

6. Instantaneous on/off

7. Kev ntsuam xyuas spectrum los ntawm tus thib peb - tog

8. EPA, ISO9001, CE tau ntawv pov thawj

SPECIFICATIONS

1. Model No.: UWM222-40W

2. Peak Wavelength: 222nm

3. Loj: 2457844mm

4. Input Voltage: 24vDC

5. :40w

6. Beam Angle: 60 degree

7. Radiation Intensity: 120μw/cm²(50cm)

8. Kev Ua Haujlwm Kub Kub: -10 degree - 150 degree

9. Cov ntaub ntawv: lub teeb raj, aluminium vaj tse, quartz iav lim

10. Lifespan: 4000 teev

Daim ntawv thov

Cua tua kab mob

Deg tshuaj tua kab mob

Dej tua kab mob

Kev huv huv chav

Kev huv huv rau cov chaw pej xeem

Germicidal Efficacy thiab Mammalian Skin Safety of 222-nm UV Light

It has been proved that 207-nm ultraviolet (UV) light has similar antimicrobial properties as typical germicidal UV light (254 nm), but without inducing mammalian skin damage. The biophysical rationale is based on the limited penetration distance of 207-nm light in biological samples (e.g. stratum corneum) compared with that of 254-nm light. Here we extended our previous studies to 222-nm light and tested the hypothesis that there exists a narrow wavelength window in the far-UVC region, from around 200–222 nm, which is significantly harmful to bacteria, but without damaging cells in tissues. We used a krypton-chlorine (Kr-Cl) excimer lamp that produces 222-nm UV light with a bandpass filter to remove the lower- and higher-wavelength components. Relative to respective controls, we measured: 1. in vitro killing of methicillin-resistant Staphylococcus aureus (MRSA) as a function of UV fluence; 2. yields of the main UV-associated premutagenic DNA lesions (cyclobutane pyrimidine dimers and 6-4 photoproducts) in a 3D human skin tissue model in vitro; 3. eight cellular and molecular skin damage endpoints in exposed hairless mice in vivo.

Comparisons were made with results from a conventional 254-nm UV germicidal lamp used as positive control. We found that 222-nm light kills MRSA efficiently but, unlike conventional germicidal UV lamps (254 nm), it produces almost no premutagenic UV-associated DNA lesions in a 3D human skin model and it is not cytotoxic to exposed mammalian skin. As predicted by biophysical considerations and in agreement with our previous findings, far-UVC light(40w 222nm uv light module far uv lamp effectively killing germs and virus) in the range of 200–222 nm kills bacteria efficiently regardless of their drug-resistant proficiency, but without the skin damaging effects associated with conventional germicidal UV exposure.

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