I dug one up in the deep recesses of our school darkroom. I believe it was in use when the photo teacher had to do the yearbook. Anyways, I believe it was meant for inspecting film during development. The thing is quite opaque. I cannot see through it. It reminds me of my 87C IR filters
Anyway, how does one use it? What bulb would be best? I only have the filter, not whatever box it attaches to...
My literature on Kodak safelights says, "Dark green -- Some panchromatic materials." According to MichaelandPaula.com, it is the proper filter for development by inspection. See here for their web page on development by inpection: http://www.michaelandpaula.com/mp/devinsp.html
My Kodak lit has the transmission graph too, here's a snip:
A leading global manufacturer focused on commercial print and advanced materials & chemicals. We believe in the power of technology and science to enhance what the world sees and creates.
GEK Mees wouldn't join Eastman Kodak to head up their new research facilities unless the company bought Wratten & Wainwright, Wratten remained a separate company for many years, although owned by Kodak Ltd (UK).
A safelight filter for development by inspection in a high school darkroom.
What could go wrong?
Have fun with it Andy.
My local Dollar store has small incandescent bulbs.
I have the fixture that fits in. I have a yellow filter and a brown filter. What I don't have for that fixture is an actual red filter. I don't think I have a green one.