All the inks have been formulated with carefully chosen pigments to ensure maximum brilliance of colour. Single pigments have been used wherever possible to make clean colour mixtures. The formulations of the inks are non waterproof ensuring they are non clogging and have good flow characteristics when used in a fountain or dip pen.
The 14 blue capped bottles are suitable for use with a dip pen, fountain pen, technical pen and airbrush. The remaining 4 opaque colours (red caps) are suitable for dip pen and brush.