Cyanotype with Gum?

Mac Cosgrove-Davies (MCOSGROVEDAVIES@worldbank.org)
Tue, 07 May 1996 13:07:45 +0000 (GMT)

Thumbing through a 1943 Handbook of Chemistry and Physics, I
came across the following formula for cyanotype:

Solution A

Potassium Ferricyanide 10gm
Distilled Water 100 ml

Solution B

Iron and Ammonium Citrate (ferric) 30gm
Water 100 ml
Gum arabic 5gm


I haven't tried this formula, but am curious to know if anyone
has any experience in adding gum arabic to the cyanotype
recipe.

Mac Cosgrove-Davies