• This ink is for dip pen use only.Do not use it inside fountain pens.Made from highly opaque carbon and Color pigment, the SuperInk offers excellent reproduction quality on absorbent surfaces with optimum lightfastness. Ideal for drawing, calligraphy, and more, it is easily applied by brush, Bamboo Qalam,pen, steel brush, or air brush. The ink is free-flowing, non-clogging, and waterproof.This ink comes in a plastic bottle.