Red Bulb for Nuarc Safelight?

[koraks]

I didn't all that much for the stuff I got. I suppose a few Euros per sheet, certainly not more, or I would have limited my intake.

Can't tell about the performance of old rubylith; I still have some of the first rubylith I bought but that's only something like 6-7 years ago and I haven't tried it lately. Last time I used it, it peeled fine. Storage conditions probably matter a lot.

Btw, I use some for darkroom light filtering, but most of it actually goes into making masks for contact printing alt. process materials such as carbon transfer. So I get to do the peeling as well; so far without any problems provided the tip of the blade on my X-acto isn't blunt.

[Ron McElroy]

I use one of those safelights in my dark room. It has 2, 7 watt white bulbs in it and they have lasted for many years. No fogging on paper. It is on a wall away from the sink... I also have some of the old 1 watt LEDs that Tin Can posted. Again they work great as well. The one watt amber ones are not safe. I am a retired expat from the printing/graphics world as well.

[maltfalc]

Well I'm going crazy searching the internet for a decent red LED that can be put inside this Nuarc. The reason I'm so insistent in wanting to use it is because it will be a last firewall against any spurious colors from a bulb.

if you want to eliminate unwanted frequencies of light as much as humanly possible, get a laser diode rather than an led.

[Tin Can]

Did include chart plot, before...

Except for the data you'd actually need for this application. Such as an emission spectrum plot.

[j.e.simmons]

As for how Fuji X-Ray film handles red LEDs - I tried red LEDs from Lowes, Home Depot, and superbrightled. All were reputed to work, but I found that all fogged with 10-minute exposures with the light about three feet away. I put the Lowes LED in a Kodak bullet safelight with the recommended GBX-2 and have no fogging. I assume this filter would be OK for paper, but haven’t experimented yet.