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Fotospeed toners have been specifically designed for the toning of black and white silver based emulsions. The toning process involves the conversion of the black silver within the print to another metallic compound. When correctly toned, the image will be chemically stable.
SLT20 Selenium Toner provides subtle deep moody shades of purple through to just hints of warmed blacks dependant on dilution and paper type. It is ideal for archival permanence techniques at 1+39 where no color take up shown.
