From: Richard Urmonas (rurmonas@senet.com.au)
Date: 10/12/02-05:25:04 AM Z
I am trying cyanotype, but I am having a problem with
the solutions going blue when mixed. I am using
Solution A: Ferric Ammonium Citrate Green 12.5g
Water to make 50 ml
Solution B: Potassium Ferricyanide 4.8g
Water to make 50 ml
When I coat the paper I found I was getting substantial blue staining.
In a series of tests I ended up working under red safelight.
I placed a drop of the citrate solution on the paper and
spread it out with another piece of paper. I then placed
a drop of ferricyanide solution on the paper. I could see the
drop darken almost instantly.
Does anyone know what is going wrong??
Richard
--- Richard Urmonas rurmonas@senet.com.au
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