Health Canada asked us to use anti-UV glasses for UVB.
In our experiment we use UVB lamps under biological hoods and our distance is more than 2 meters from lamps and UVB/A meter shows that the amount of UVB/A combine is less than 100 micro Wat per square cm from 2 meters and is 50 micro Wat per square cm from 3 meters.
Another funny part of this story is that all flurescent lamps on the ceiling has 25 micro Wat per square cm.
While outdoor total UVB/A combine in sunlight is 8900 in Feb and 15000 in June.
When you sit near a window in sunny days, you receive 400 indirectly (in shadow) and 3000 directly (in sunlight passed from glass of windows).
But the stupidity of this rule is that in all cell culture rooms and biological hoods there are UVC lamps which is the the most dangerous UV and there is no rule for using glasses for going to cell culture rooms in Canada.
and all cell culture rooms and biological hoods have no cover to block UVC waves.
I wonder who has selected these stupids as authorities in Health Canada.
Whenever they start taking, you can quickly understand that they do not know what is UV and its kinds.
As I mentioned before in link below, Canada is the land of stupidity: