In a report from April 2020, UV-C LED manufacturer NICHIA demonstrated the effectiveness of UV-C LEDs against several bacteria cultures. In the report it was confirmed that UV-C exposure time can be exponentially reduced by decreasing the irradiation distance between the virus and the UV-C source.
The graph below demonstrates the distance to effectiveness.
![](https://static.wixstatic.com/media/a375d8_ef637bb92d7d48939e05e2c05059c282~mv2.jpg/v1/fill/w_162,h_125,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/a375d8_ef637bb92d7d48939e05e2c05059c282~mv2.jpg)
The AIR device sanitizes air within 3mm irradiance which shows the most efficacy against bacterium according to the graph above.
![](https://static.wixstatic.com/media/a375d8_6875095670aa4155aefc2c1a6e7f896d~mv2.png/v1/fill/w_49,h_27,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/a375d8_6875095670aa4155aefc2c1a6e7f896d~mv2.png)
All bacterium tested shows similar results, the closer to the source the more effective the UV-C germicidal function was.
![](https://static.wixstatic.com/media/a375d8_60bcb881de2b4fc69d1b0c63d702d42f~mv2.jpg/v1/fill/w_147,h_130,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/a375d8_60bcb881de2b4fc69d1b0c63d702d42f~mv2.jpg)
Download the Full Report:
BP-CS18755-5_UV LED Sterilization Test R
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