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Discussion Starter · #1 ·
Ok, so heres my problem, I have an exposure unit now, a Poly Lite one, the 4foot by 4foot vacuum seal unit. And some of the lights broke when I bought it, after trying to find them I finally found them. 96 bucks a bulb. And I still have no idea why they were that high. The bulbs do have some kind of funky end on them, like the pins are surrounded by this round plastic thing. Ive never seen that type before. But anyways since I needed around 5 or 6 bulbs (I think) and since Im not paying that price for them I need your help figuring out what ballast I should get and what bulbs I should get. I know a UV bulb is what I need, but to be honest, I looked and I got really confused. Whats the difference between a UV light and grow light? Im assuming theres a difference or else theyd share a name. But basically my plan is now to change the ballasts and then get the cheaper bulbs. I use a work light right now and it does the job at right around 2 minutes. Im not sure how much faster this can be? but Im loving the emulsion I have! Its the fastest Ive ever had! But if anyone can help it would be greatly appreciated!
 

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I don't know much about flourescent UV tubes but I'd hazard a guess that grow lamps are filtered to reduce potentially harmful levels of UV output. Bulbs made for the print industry are usually designed to emit UV radiation as specific wavelengths.

And $96 ain't that expensive in the grander scheme of things. The metal halide arc lamp my exposure unit uses costs over $350 US. Good thing I've got a spare!
 

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You need unfiltered black lights. F40T12BL - Damar 48-Inch 40 Watt T12 Black Light F40T12BL. If you have florescent now and the ballast are t-12 40w ballast you can simply change the sockets.

You can also look for t-8 bulbs as the t-12 ballast are no longer made so if you are changing all the bulbs and ballast then look for t-8. The socket are the same for the t8 and t-12 lights. You will need to buy these as they don't come with bulb.
 

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Can you take a picture of your socket, the bulbs where the numbers are, and the ballast. Let make sure your not working with a high output system.
 
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Discussion Starter · #7 ·
And $96 ain't that expensive in the grander scheme of things. The metal halide arc lamp my exposure unit uses costs over $350 US. Good thing I've got a spare!
It is when you're just starting out and dont have that. I was lucky enough to get what I have for less than 3 grand. And I have enough for a small shop. Im sure eventually Ill get to the point where its not that bad, but right now I dont have that to spend per bulb. But eventually my goal is to need something expensive and be able to say no problem get it here tomorrow.
 

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Discussion Starter · #9 ·
Can you take a picture of your socket, the bulbs where the numbers are, and the ballast. Let make sure your not working with a high output system.
The bulbs that came with it dont have any numbers on them, thats part of the reason why they were so hard to find, and I guess all I have is a light bulb companies word that its the right one. But Ill go and take some pictures of everything and post them.
 

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Discussion Starter · #10 ·
The bulbs that came with it dont have any numbers on them, thats part of the reason why they were so hard to find, and I guess all I have is a light bulb companies word that its the right one. But Ill go and take some pictures of everything and post them.
Actually I was mistaken, they do have numbers on them but they didnt help me posting pictures in a minute...
 

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Discussion Starter · #11 ·
Well heres all the pictures I took that I thought would be a help. If you guys can help me find the bulbs but at a lesser price that would be amazing too. Any pictures you need that I didnt take?
 

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Ok so it appears you have t-10 high output bulbs. A pic of the ballast will confirm that. In a 48" bulb if I remember right they are around 100 watts. There is also a low power version of this and is the same as a T12 40watts. The low power t10 weren't as popular and I believe weren't produced very long. So you will need the ballast info to identify what you have. I don't think the bulbs were ever produced as a unfiltered black light but not sure about that and can't find any by a search. I do know I changed a ton of these in grocery stores in the late 80's- early 90's that were the high output bulbs.

Did you contact AWT for the bulbs. Is that who gave you the $96 per bulb price. They may have had them custom produced in unfiltered black light. There are places that will make custom bulbs in quantities.

If they are the the high output I recommend getting t-8 ballast new sockets and unfiltered blacklights. The sockets appear to be the slide type. I will post below the replacement for that type with ballast and bulbs.
 

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Discussion Starter · #14 ·
You totally lost me. Um so you need another picture? Of what and where? Im basically looking for you to just tell me what I need, because Im starting to figure out that Im never going to understand why, or how.
 

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If you haven't called AWT it may be worth a phone call. Otherwise you need a picture of the ballast with the fumblers to determine what you have.
 
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