Cyanotype / Lightening with ammonia

REF #11

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

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

Ammonia solution NH3·H2O sol. 0.005%

1. Make a basic cyanotype (5 mins), do not dry.
2. Rinse twice for 1 min.
3. Dip in heavily diluted ammonia for 3 secs.
4. Wash for 10+10 secs.

Corrosive product: Handle with nitrile gloves and safety goggles.

Be careful when preparing diluted ammonia: ammonia vapours are extremely irritating.