The Gum Bichromate print is different than the other processes in that the sensitive emulsion offers a base that a dye or water pigment can be added to produce any colour print the maker requires.
<Context ref.>AlternativePhotography.com : the gum bichromate process [En línia]. [Consulta: 4 juliol 2005]. Disponible a: <http://www.alternativephotography.com/process_gumbichromate.html>