On Sat, 18 Jan 2020 16:11:01 -0500, KC JONES
wrote:

I've had a germicidal lamp more or less in storage for a number of
years, but recently brought it out to sterilize a room where a person
had been sick. However, I don't know if it still emits the germ killing
UVC spectrum. What's a quick way I could tell for sure? Thanks.

All the UVC lights I have ever used have some part of the visible
spectrum. See if white items "glow".

Steve

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