Diazo Photo Emulsion Kit contains one 7 oz. jar of photo emulsion, one 8 oz. jar of photo emulsion remover, and one 1 oz. bottle of condensed sensitizer.
Diazo Photo Emulsion has a three year shelf life if not mixed. Once sensitized it has a shelf life of four weeks at 90º F., eight weeks at 70º F., and four months when refrigerated.