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- Sep 9, 2015
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Hi everyone,
I have a question regarding the Mike Ware’s cyanotype formula.
I’ve made a batch of solution in order to make 750 ml of cyanotype.
Unfortunately I surely made a mistake because the solution is very “dark”, more emerald green toward strong blue than the olive-green I usually have.
When I tested the solution on Berger COT320 paper, it ended up turning green almost immediately…
However, after the development process the result seems good, but I don’t feel comfortable at all with the solution I made, I don’t want my prints to end up bad in the future.
Would you please help me understand what turned bad?
This is the recipe I made for a final 750 ml solution:
• Potassium ferricyanide = 75 gr.
• purified water = 150 ml
• Ammonium Iron (III) oxalate = 225 gr.
• purified water = 225 ml
• Ammonium dichromate = 0.75gr.
The two solutions were very hot when mixed together and then left overnight to crystallize.
• The amount of crystals after decantation was about 105 gr.
• The amount of filtrated liquid was about 450 ml.
I made up the filtered solution with purified water to make a total of 750 ml solution.
As you can see, I multiplied the compounds by x7.5 the initial recipe.
Did I make a rookie mistake?
Many thanks for your help.
I have a question regarding the Mike Ware’s cyanotype formula.
I’ve made a batch of solution in order to make 750 ml of cyanotype.
Unfortunately I surely made a mistake because the solution is very “dark”, more emerald green toward strong blue than the olive-green I usually have.
When I tested the solution on Berger COT320 paper, it ended up turning green almost immediately…
However, after the development process the result seems good, but I don’t feel comfortable at all with the solution I made, I don’t want my prints to end up bad in the future.
Would you please help me understand what turned bad?
This is the recipe I made for a final 750 ml solution:
• Potassium ferricyanide = 75 gr.
• purified water = 150 ml
• Ammonium Iron (III) oxalate = 225 gr.
• purified water = 225 ml
• Ammonium dichromate = 0.75gr.
The two solutions were very hot when mixed together and then left overnight to crystallize.
• The amount of crystals after decantation was about 105 gr.
• The amount of filtrated liquid was about 450 ml.
I made up the filtered solution with purified water to make a total of 750 ml solution.
As you can see, I multiplied the compounds by x7.5 the initial recipe.
Did I make a rookie mistake?
Many thanks for your help.
