Re: Tube guards on a germicidal lamp? « Reply #1 on: June 22, 2022, 06:15:48 PM » Author: Burrito
Or maybe find a clear one then spray paint the inside with phosphors or something?
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	Re: Tube guards on a germicidal lamp? « Reply #2 on: June 22, 2022, 06:16:51 PM » Author: Rommie
Not sure what device you mean, but as long as there is plain glass between you and the lamp it should be ok. Make sure there is no possibility of leakage anywhere, and limit your exposure time, just to be on the safe side.
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	Re: Tube guards on a germicidal lamp? « Reply #3 on: June 22, 2022, 06:50:24 PM » Author: Mandolin Girl
We used a big beer glass upside down as a barrier.
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	Re: Tube guards on a germicidal lamp? « Reply #4 on: June 22, 2022, 06:58:44 PM » Author: wide-lite 1000
I don't think a tube guard would do anything since they're made of plastic .
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	Re: Tube guards on a germicidal lamp? « Reply #5 on: June 23, 2022, 09:53:42 AM » Author: Medved
Well most plastics do block UV, but at the expense of the heavy corrosion (browning) of that plastic. So not a good idea. And even a phosphor wouldn't help, it by far does not absorb all of the UV. The real UV blocker on a regular general lighting fluorescents is the soft glass tube material, so if something, I would start from that (e.g. making an enclosed wooden display box with a regular soft glass cover window)...
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	Re: Tube guards on a germicidal lamp? « Reply #6 on: June 23, 2022, 09:55:51 AM » Author: dor123
What is the UV absorption curve of most plastics?
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	Re: Tube guards on a germicidal lamp? « Reply #7 on: July 02, 2022, 06:40:27 AM » Author: HIDLad001
Plastic ones might work, but they would yellow almost instantly. What I think you should do, is get some borosilicate glass tube, and cut it to size. Glass blocks the UV, and doesn't yellow. And if you're wondering, yes it does let that beautiful ghostly blue through.
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