Bain Marie
From George Eastman House : Notes On Photographs
A heated water bath. This was essentially a double boiler made by putting one tray of water into another. The advantage of this system was that the upper tray could never boil despite the temperature of the heated tray below. This system was particularly useful for development of albumen plates and for the carbon printing process.[1]
- ↑ Osterman, Mark. 2007. Bain Marie. In The Focal Encyclopedia of Photography: Digital Imaging, Theory and Applications, History, and Science, ed. Michael R. Peres, 45, Focal Press.