← Back to variante (SnCl2 - ZnSO4 toning)

Cyanotype / SnCl2 - ZnSO4 toning

REF #18

Greyish blue Sky blue Pale Lavender Lavender White

Ferric Ammonium Citrate [NH4]{y}[Fe{x}(C6H4O7)] sol. 20%

Potassium Ferricyanid K3[Fe(CN)6] sol. 8%

Zinc sulfate ZnSO4.7H2O sol. 2%

Stannous chloride SnCl2 sol. 1%

365nm

Operating procedure

1. Make a basic cyanotype (6 min), with 2 min rinsing, do not dry.
2. ZnSO4 bath for 2 min.
3. Wash for 30+30 s.
4. SnCl2 bath for 2 min.
5. Wash for 30+30+30 s.