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Lloyd Godman
Alternative
Photographic Processes - (Hand
made photographic -emulsions and processes)
Van
Dyke Brown Recipe & Process
There are two different
recipes for this process, one that gives a dark brown image the other
that gives a sepia brown image.
Recipes:
| |
|
Sepia brown
|
Dark brown
|
Alternative
Recipe
|
| 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) |
25 grams
(Develop
this mixture in a 1% borax solution) |
30
gram |
18
gram |
| Tartaric Acid |
analar
quality is more refined and also more expensive but may be all
that is available- it is not necessary GPR (98%) grade of purity
is adequate for all chemicals )
(Before
use, read Health hazards) |
4 gram |
5 gram |
3 gram |
| Silver
Nitrate |
(analar
quality is more refined and also more expensive but maybe all
that is available- it is not necessary GPR (98%) grade of purity
is adequate for all chemicals ) (Before
use, read Health hazards)
|
10 gram |
10 grams |
7.5 grams |
| Distilled
Water to make - |
|
Develop
this mixture in a 1% borax solution
to make 300ml to make |
to make 300ml |
to make 200ml |
Method:
- Mixing the Chemicals
Step 1.
In subdued light
or yellow or red safe light: Mix each of the chemicals separately in
about 50ml of distilled water.
Once mixed, slowly
combine Ammonium Citrate of Iron solution Tartaric Acid solution and
lastly slowly add in Silver Nitrate solution.
Top the solution
up with distilled water to make 200ml. This solution will last for a
few months stored in dark brown bottles in a dark place.
While the solution
can be used immediately, there is some argument that the solution need
24 to 48 hours to ripen.
Want to learn more? - do a workshop or one on one with Lloyd Godman
|
