[Alt-photo] cyanotype paper

Alberto Novo alt.list at albertonovo.it
Sat Dec 2 07:33:38 UTC 2017

> With vinegar and citric it leans turquoise. With sulfamic it leans purple. Caveat: I am using classic cyanotype at only a 10% ferric ammonium citrate/10% potassium ferricyanide so YRMV, but UVBL exposures are 12-19 minutes with acid development.

Hi Chris, 
I see that you have switched to a greater amount of ferricyanide, like we discussed time ago.
Hence, there are some benefits, isnt'it?


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