Emulsion to make Blue Prints 300 ml + 300 ml.
The A solution contains ferric ammonium citrate. The B solution contains potassium ferricyanide. The complete set (2x300 mL) is capable of coating 300 8x10" sheets. Cyanotype is an old monochrome photographic process that makes Prussian Blue print.
The technique was invented by the british scientist and astronomer John Frederick William Herschel in the 19th century. With the cyanotype technique, you can create photograms from objects plated on the sensitized paper or contact prints from a photographic (or digitally created) negative. As the emulsion is UV sensitive you can easily make contact prints or photograms using sunlight, with no special tools needed.
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