Cyanotype - Recipe:
There are many different
recipes for the Cyanotype but one seems to be definitive. The Cyanotype
process yields a distinctive metallic blue on the paper base. It is
also ideally suited to printing on a fabric such as washed cotton or
linen When laundering garments printed with Cyanotype, treat as a delicate
fabric. As the negative is contact printed in sunlight the image will
be the same size as the neg.
Prepare the two stock
solutions and store separately in brown small bottles. Stored this way
they will keep for approximately 6 weeks. Gently shake before use and
mix equal parts.
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|
Alternative
recipe |
Simple
Cyanotype |
SOLUTION
A:
Ammonium Citrate
of Iron or Ammonium Ferric Citrate (Green Scales or Powder) Ammonium
Citrate of Iron or Ammonium Ferric Citrate (Green Scales or Powder)
( Brown Powder will work but appears to react slower)
|
GPR (98%) grade of purity is adequate
for all chemicals
Before use, read
Health hazards)
|
68
grams |
25grams |
Oxalic acid |
Before use, read
Health hazards) |
1.3gram
|
Not applicable
|
|
|
Mix
with distilled water to make 250ml and store in a brown glass
bottle |
Mix
with distilled water to make 125ml and
store in a brown glass bottle |
SOLUTION
B:
Potassium Ferricyanide
(not ferrocyanide)
|
Occasional some chemicals may
be ladled in a foreign language
(analar quality is more refined
and also more expensive - it is not necessary GPR (98%) grade
of purity is adequate for all chemicals )
Before use, read Health hazards)
|
23
grams
|
17gr
Mix with distilled Water to make
125ml
|
Oxalic Acid |
(Before use,
read Health hazards) |
1.3gram |
Not applicable |
Ammonium
bichromate |
(Before use,
read Health hazards) |
0.5 gram
Mix with distilled water
to make 250ml and store in a brown glass bottle
|
Not applicable
Mix with distilled water
to make 125ml and
store in a brown glass bottle
|
Store solutions
A & B in separate bottles until ready to use.
Method:
- Mixing the Chemicals
Step 1.
When you are ready
to coat your paper, combine equal amounts of solutions A and B under
subdued light such as a red or yellow safe light. For optimum results,
try to mix about the amount needed during one day.