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Thiourea Toner


Product Description

06-0045 1 lt
Formulary's Thiourea Toner will give beautiful rich brown sepia-like tones. The print is first bleached using a ferricyanide-bromide bath then redeveloped in a sulfide bath. During this process, the silver metal in the print is first converted to silver bromide, then to brown silver sulfide. The end result will give the impression of a print made in the late 1800's.


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