guess I will try this.
BW image silver can be removed by soaking it in a solution of
Potassium ferricyanide whcih you would find at a photo store still
selling darkroom stuff,
or from a supplier. Try a teaspoon of the (pretty) orange powder to
a gallon of water. When image is very light or has disappeared,
dunk/rinse in water,
and submerge in photo fixer for about 5 minutes. (photo store that
sells darkroom stuff)
Potassium ferricyanide has that cyanide component tightly attached
to the potassium, so it's safe to use.
However: rubber gloves, and don't let it sit around in bright
light. Bright light only, will eventually disassociate the
potqassium from the ferricyanide.
Otherwise it is stable. There are no fumes either.
On Feb 14, 2012, at 7:00 PM, Myron Ort wrote:
Will Farmers reducer and/or its variants bleach out dense parts of a
color positive movie film print?
Looking for an alternative to household bleach in order to prepare
for some hand color tinting and painting.
Myron Ort
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