I made up some silver nitrate sensitiser according to James
p 471, that is 15% silver nitrate plus 5% citric acid in distilled water.
I see there is now some crystals at the bottom of the
bottle. They weren’t there when I made the solution up and sensitised some
paper. I can’t seem to dissolve them, even with heat and vigorous shaking.
What are they? Are they anything to worry about? Can I filter or decant them
One other thing, James says that coating with a rod is possible.
This would be preferable for me at this moment. As the sensitiser is clear, coating
under safelights is tricky to say the least. Can I do it under low ambient
light as I do quite safely with gum? If not any tips or tricks would be most