I've done a lot of coating with PT/PD under a 40 watt incandescent lightbulb. I've yet to notice any problems. The bulb is about 6 feet from my coating station. I dry my coated paper in the dark. I don't like yellow bug lights because you can't see what you are doing when coating—the solution is yellow too!
On Jul 27, 2008, at 7:25:14 AM, "BOB KISS" <firstname.lastname@example.org> wrote:
Do NOT coat under fluorescent lighting. They emit UV and most
"sages" say that they can cause fog in UV sensitive processes.
Most say that dim tungsten is fine but I also take the extra
precaution of coating under yellow "bug bulbs".