RE: Ware/Malde-Ziatype-DOP palladium,was RE: "New" Paper for Pt/Pd (and other iron processes, too)
Camden, > whereas for ziatype sodium tungstate is added to the solution. Humidity doesn't seem to be as much of a factor in color for ziatype. Of course, I could be entirely off-base here too... :) > Ziatype color can be controlled by humidity and or additives. There are no absolute guidelines about controlling the color of the print, however Sullivan & Weese's book has a chart that gives some good information about how additives affect color and contrast. The addition of tungstate is one of the options. Normally lithium palladium will produce a neutral toned print but if you leave a coated paper in the dark and let it dry out it will shift quite warm. Don Bryant
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