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Cyanotype / ZnSO4 - SnCl2 Toning

Cyanotype / ZnSO4 - SnCl2 Toning

REF #100
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Potassium Ferricyanid K3[Fe(CN)6] sol. 8%
1
Ferric Ammonium Citrate [NH4]{y}[Fe{x}(C6H4O7)] sol. 20%
1
Nickel sulfate NiSO4(H2O)6 sol. 2%
Nickel sulfate NiSO4(H2O)6 sol. 2%
365nm

Operating procedure

1. Make a basic cyanotype (6 min), with 30+30s rinsing, do not dry.
2. NiSO4 bath for 2 min.
3. Rinse for 30+30+30 seconds.
4. ZnSO4 bath for 2 min.
5. Rinse for 30+30+30 seconds.