Potassium Ferricyanide 20g for Cyanotype Process

Potassium Ferricyanide is a raw chemical and one of two main ingredients that make up the cyanotype process alongside Ammonium Ferric Citrate.

If you are making Cyanotypes, you will need Ferric Ammonium Citrate 50g to make up your formula.

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Potassium Ferricyanide 20g

Potassium Ferricyanide 20g is a raw chemical and one of two main ingredients that make up the cyanotype process alongside Ammonium Ferric Citrate.

Another use is to use it to make up bleach for use on prints or negatives.

If you are making Cyanotypes, you will need Ferric Ammonium Citrate 50g to make up your formula.

Cyanotype Formula

Measure 25g of Ammonium Ferric Citrate and add water to make it up to 100ml.
Measure 10g of Potassium Ferricyanide and add water to make it up to 100ml.
Make sure you fully dissolve both the chemicals.
In subdued light, mix the two solutions together.

This formula will make up 200ml of working solution, enough to coat roughly 50 sheets of A4. You should coat paper away from sunlight and leave to dry in the dark.

How To Make Cyanotypes

For full instructions see This is How You Make Cyanotypes. You might also be interested in our Parallax Cyanotype Kit. It has pre-measured Ferric Ammonium Citrate and Potassium Ferricyanide, 20 sheets of A5 Arches Platine Paper, a Foam Brush, Vinyl Gloves and full instructions. So, everything you need to get started!

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