365nm and 395nm difference between these UV flashlights. The electromagnetic spectrum of ultraviolet radiation (UVR), defined most broadly as 10–400 nanometers, can be subdivided into a number of ranges recommended by the ISO standard ISO-21348:
Name Abbreviation Wavelength
(nm)
Ultraviolet A UVA 315–400
Ultraviolet B UVB 280–315
Ultraviolet C UVC 100–280
Source :Wikipedia -https://en.wikipedia.org/wiki/Ultravi...
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