Akua 60ml Ultramarine Blue Intaglio Ink is soy based, with intense colour that cleans with soap and water.It wipes clean from etching plates, leaving plenty of colour in grooves.Akua dries through absorbtion into dry or damp paper fibres, not on your equipment.Ideal for Intaglis/Etching, Monotype, relief and Collagraph printmaking and can be used with Akua Liquid Pigments and modifiers.