toning cyanotypes

From: dennis vinciguerra <VINCIGUERRA3_at_domain.name.suppressed>
Date: Thu 24 Oct 2002 - 20:24:01 PDT

Hello all,
Certain cyanotype images work very well in blue, some in brown but then
there are those that need to be black. The formula I have calls for nitric
acid but I'm not having any luck locating it. Anyone have either a source
or another black toning formula ?

Thank you,
Dennis
Received on Thu Oct 24 20:23:03 2002

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