Pebeo primary colorex ink is a set of five bottles of 45 ml watercolour ink which provides a high luminosity and a matte finish thats velvet to the touchthe ink is highly concentrated and can withstand heavy water dilution which makes it ideal for creating faded or lighter tones apply with a pen brush or airbrush across watercolour or heavyweight paperthe ink provides an opaque finish and can be mixed with a variety of inks you can also use it with masking mediums to stay in control of th