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Old 9th January 2021, 08:25 PM
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The lamp says UV-A which is less dangerous than UV-B. UV-C is extremely dangerous and is used for sterilising medical equipment - do not go anywhere near a bare UVC lamp when it is on - not even for a few seconds.

Saying that, you do not want to expose yourself to high levels of UVA either so best to keep it from bouncing around the room. If the light is completely enclosed within a box then obviously, that is fine. I would be tempted to add some extra black cardboard shielding around that lamp Ian.

For a small amount of leakage around the edges then, yes, it's a good idea to just leave the room until it is finished - a tiny exposure on your way to the door will do no harm.

Most UV from the sun is UVA (although UVB is mainly what gives you sunburn). All the natural UVC is blocked by our atmosphere.
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