Prussian Blue LA09-04 and La09-05 are both used for paints, the difference is the tone. They are a translucent deep black-blue with high tinting strength, fine grained powder. Epsilon Prussian Blue is ground in linseed oil without the use of stearates or other additives that affect the behavior of the pigment in oil. The pale linseed oil used to make this color is well aged and refined to provide higher levels of reactivity and oxidation than raw oil. The consistency is a smooth, thick, rich color. Prussian Blue LA09-04 and LA09-05 are used for paints, including water based and oil based paints.