UVC Light or Ozone as a Disinfectant?

How do you spot ultraviolet light? A cheap way is UV indication cards but is a cheap way a good way? In this video, I test three different indicators with six different lights.
I also show how it is possible to use the cards to test if your glasses have UV protection. Including potential misreads depending on the light source used.

My Patreon-page: https://www.patreon.com/Brainiac75

More about amber search lights: https://youtu.be/gNJAHwJwPLc
More about the 3W GTL3 UVC lamp: https://youtu.be/bb4t1F88mHs
Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos

FULL MUSIC CREDITS
Time codes: 0:01 + 10:06
"Long Note Three" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100424

Time code: 0:51
"Lightless Dawn" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655

Time code: 4:55
"Neo Western" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100615

Time codes: 5:53
"Perspectives" Kevin MacLeod (incompetech.com)
ISRC: USUAN1300027

Time code: 7:46
"Energizing" Kevin MacLeod (incompetech.com)
ISRC: USUAN1900040

All music above licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/

Time code: 7:16
Mix of two tracks:

#UVdetection #UVprotection