Ammonium Citrate Developer

Ammonium Citrate 1qt

This developer is for developing the image after exposure. This is one of several developers used in platinum palladium printing. It can be saved and used over and over again as long as you replenish what evaporates with fresh developer, and filter out the sludge that accumulates periodically using a coffee filter and plastic funnel. The color will darken due to dissolved metal accumulating in it. Many printers swear the older the developer, the better. Other printers prefer to start with fresh developer every once in a while.