Phthalo Green (Phthalocyanine Green) Artist Pigment Ink Fast drying, Water resistant & Lightfast Formulated with the highest quality artist pigment in our superior shellac solution and can be applied with brush, dip pen or airbrush Not to be used in a fountain pen Can be easily diluted with water to reduce the strength of the colour or to increase it's transparency. Distilled water must be used as tap water causes the pigment to separate from the binder.   Product Information Pigment: Phthalo Green Pigment C.I Number: P.G 7 Series: 1 Lightfastness: AAA Opacity: Semi-Transparent Vehicle: Shellac