LED ultraviolet bactericidal lamp with aliexpress, ultraviolet test.
"UV" led lamp: http://ali.pub/4rzlt4
Quartz mercury lamp: http://ali.pub/4rzqhi

In this video, I tested the LED bactericidal lamp from aliexpress, which, according to the seller, is able to kill fungi, bacteria, mold, etc. I checked the presence of radiation with a wavelength of 185 nanometers, from which ozone is formed from the air. Also conducted two experiments on the presence of ultraviolet radiation, capable of destroying microorganisms and viruses. For the first test, I used the properties of ordinary window glass, which equally passes all visible light, but completely traps ultraviolet rays with a wavelength of less than 300 nanometers. For the second test, I took the EPROM memory from an old fax machine and tried to erase it using an LED lamp. And finally, I checked the emission of 365 nm, which causes the luminescence of some elements in banknotes.

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