Copper Toner

2 Solution Toner:

Solution A:

500 ml of water
25 grams of potassium ferricyanide
2 ml of concentrated ammonia (20ml of household ammonia)

Solution B:

500 ml o water
10 grams of copper sulfate
25 ml of acetic acid
25 ml of concentrated hydrochloric acid (liquid swimming pool acid)

Bleach in A, wash and tone in B, wash

Single Solution Toner:
(must be made up fresh, light sensitive)

500 ml water
10 grams of sodium citrate
10 grams of sodium acetate
5 grams of copper sulfate
0.5 grams of potassium ferricyanide
0.5 grams of potassium persulfate (optional)

See Amidol intensifier on Copper Print page.

Copper and Selenium toned image