J.Herbin  Ink bottle, La Perle des Encres serie Violet ink (Pansy violet)

For fountain pens and glass pens Water-based, 30ml Violette pensée (Pensive violet): this color is also a flower from the very same name. Since Napoleon I, French pupils used violet ink color, the least expensive color. This ink was made of methyl-violet, also used to disinfect wounds.