Somerville blue tonergreenspun.com : LUSENET : B&W Photo - Printing & Finishing : One Thread
I read an article about the advantages of Somerville's method for blue iron toning. I would like to try. Can somebody inform about the Somerville formula?
-- Lemos Pinto (email@example.com), September 20, 2001
Potassium Ferricyanide 20g
Ammmmonia solution (10% strength) 100ml
Ferrous Sulphate 20g
Hydrochloric acid (10% strenght) 100ml
Source: Black and white photographic printing workshop; Bartlett/Tarrant
-- Marc Leest (firstname.lastname@example.org), September 22, 2001.