Around 1704, a man named Diesbach in Berlin discovered how to produce a beautiful blue color from iron salts and cattle blood waste. Since then, this pigment has been marketed under a wide variety of names, such as Paris blue, Milori blue, Prussian blue or Berlin blue. The PB 27 pigment is suitable for all applications in pH-neutral binders. It is destroyed in acids or alkalis or at higher temperatures. Like organic pigments, Berlin Blue is difficult to wet.