Rohrers pigmented calligraphy ink give brilliant and beautiful colours which are lightfast. There are 24 modern and classic colours developed in conjunction with Schmincke company. The inks have optimal flow and drying characteristics for calligraphy. They are largely water and wipe resistant as well as being resistant to eraser and tape. The colours can be applied with dip pens, quills, brushes and even airbrushes. Of note is that the inks also perform exceptionally well on absorbent papers such as watercolour and ingres, giving you more options.