Sequence viewing > Index - Alternative Photo Emulsions - Resource - © Lloyd Godman

Variations to the cyanotype emulsion

With the Cyanotype, the combination of chemicals can be varied to produce different effects -

a greater proportion of solution A - Ammonium Citrate of Iron or Ammonium Ferric Citrate increases the sensitivity and consequently less exposure time
a greater proportion of solution B - Potassium Ferricyanide produces a deeper blue
Contrast can be increased by adding potassium dichromate. six drops per 2 millimeters working strength emulsion.



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