Ultradraw® Waterproof Black India Ink 22ml by Koh-I-Noor Universal
Specially formulated to be non-clogging in technical pens Koh-I-Noor Ultradraw® Waterproof Ink is waterproof permanent fadeless and acid-free. It has a longer open-pen time than most inks yet dries quickly on the drawing surface. Ultradraw® is a dense black india ink yet it erases easily. Use for airbrush dip pens and calligraphy pens as well as technical pens. 22 ml bottle.