Welcome aboard @Premier!
There's a difference between papers; some papers work OK with an amber safelight (they will also work OK with red) and others (esp. Foma) that really need a red safelight as amber will fog them. So the safest bet is a red safelight. I've personally used red LED strips shielded with an extra layer of rubylith. This has worked well for me for years. There's a limit to how bright you can make it before the paper starts to fog; this depends mostly on the paper you use. E.g. Fomaspeed will fog a a few stops earlier than the much slower Fomatone. So whichever solution you choose, be sure to perform adequate tests as @MattKing outlines above. Note that only testing for fogging of the whites is not adequate! You really need to determine as well whether there's an effect on the contrast, even if the safelight doesn't generate image tone by itself. It can still act as a contrast-reducing fogging exposure.
fully agree. I'm paranoid about safelight fogging and also went with red lights with additional rubylith protection; not the brightestbut the safest.


