Christopher John Ball Fine Arts Photographer and Writer

Copper Toner ( Red )

  • Solution A
  • water :- 700ml
  • Copper Sulphate Cryst. :- 25 grammes
  • Potassium Citrate :- 110 grammes
  • Water make up to :- 1000ml.

  • Solution B
  • water :- 700ml.
  • Potassium ferricyanide :- 20 grammes.
  • Potassium citrate :- 110 grammes.
  • Water to :- 1000ml.

Use one part A + one part B. The results range from warm black to purplish-red, depending on how long the print is immersed. Wash for 30 minutes.

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