Somerville blue toner : 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 (, September 20, 2001



Potassium Ferricyanide 20g

Ammmmonia solution (10% strength) 100ml

Water 1000ml


Ferrous Sulphate 20g

Hydrochloric acid (10% strenght) 100ml

Water 1000ml

Source: Black and white photographic printing workshop; Bartlett/Tarrant

-- Marc Leest (, September 22, 2001.

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