Triphosphors and UV output

Topics related to lamps of all types, shapes, sizes and colours!
User avatar
Posts: 660
Joined: Wed Jan 05, 2011 7:01 pm
Favourite Manufacturer: Fitzgerald
Area of interest: Fluorescent and Mercury Discharge Lighting
Oldest item: BTH 200W Carbon Filament Lamp
Location: Cambridgeshire

Triphosphors and UV output

Postby SuperSix » Thu Apr 14, 2011 5:15 pm

Just a quick question. I understand that Triphosphor tubes give out a bit more UV than their halophosphate counterparts. I'm using Tri 840s under my shelves to display some plastic (acrylic) cased GPO telephones. I do have slight concerns over the UV output from these tubes and the fact that they're rather close to the phones, okay there's a very small amount of UV which is probably only a tiny percentage of what they'd receive in direct sunlight. Should I have a concern or not? The lights are on for about 6 hours a day and I don't fancy the plastic yellowing/fading as a couple of them are worth a bit of money!

Also would Natural colour 25s give out less UV than 840s?

User avatar
ATL Admin
Posts: 881
Joined: Mon Jan 03, 2011 5:39 pm
Favourite Manufacturer: Pre 1993 Thorn
Area of interest: Fluorescent and Discharge Lighting
Oldest item: One of a few pip top lamps!
Location: Oxfordshire

Re: Triphosphors and UV output

Postby Tom » Thu Apr 14, 2011 8:44 pm

I doubt the UV output is of anything to worry about, especially as many old phones would have been sat in front of a hallway window at some point! However UV filter sleeves are avaialable which are used in art galleries etc. should you have any concern!

User avatar
Posts: 1184
Joined: Wed Jan 05, 2011 10:32 pm
Favourite Manufacturer: Atlas and CourtneyPope
Area of interest: Discharge and Fluorescent
Location: Cornwall

Re: Triphosphors and UV output

Postby Kev » Thu Apr 14, 2011 11:01 pm

They difinatly cause more UV i was working on some weather packs yesterday that have been hammered left on 24/7 in a F/S the plastic was in a right state and they were only 2002 i mean like bananna yellow!

Return to “Lamps”

Who is online

Users browsing this forum: No registered users and 1 guest