Caligraphy ink for nibs, brushes, airbrushes (not for fountain pens), pigments in pure acrylate binder, water-based, application is either transparent or opaque depending on the colour, non-yellowing, age resistant, erase-proof, adhesive tape resistant, smudge and water resistant, can be photocopied, colours can be mixed with one another, lightfastness (non-fading) is either satisfactory or of the highest degree depending on the colour.