Kallitype
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A chemical process similar to the Van dyke brown based on the use of a combination of ferric and silver salts. Many developing solutions can used to give a different image color (brown, sepia, blue, maroon and black). Kallitype images generally have a richer tonal range than the cyanotype. These prints were popular in the 19th century, and then their popularity faded away. Sometimes known as "the poor man's platinum print", when developed in a solution of sodium acetate, tartaric acid, potassium dichromate and water a platinum toned Kallitype can produce an image nearly indistinguishable from a Platinotype.
[edit] Darkroom Technique
chemical solutions required
sensitizer:
Ferric oxalate (50g)
Oxalic acid (3g)
Silver Nitrate (25g)
add distilled water to make 300 mL
Developers:
Sepia tones-rochelle salt (45g), potassium dichromate (1.5g), add distilled water to make 950 mL
Blue-black tones-Borax (24g), Rochelle Salt (90g), Potassium dichromate (1.5g), add distilled water to make 950 mL
Neutral-black tones-Borax (90g), Rochelle salt (68g), Potassium dichromate (1.2g)
add distilled water to make 950 ml
Fixer:
sodium thiosulfate(hypo) (50g), Ammonia (.88) (12mL)
add distilled water to make 1 liter
Procedure
step 1: spray paper with household starch, allow paper to dry
step 2: prepare sensitizer solution
step 3: apply sensistizer using cross-hatched strokes, dry paper in darkness
step 4: expose image until tone look correct
step 5: place paper in developer, do not overdevelop
step 6: wash for 2 minutes, then fix in special fixer, then treat in hypo solution, allow to dry
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