I185. Daler Rowney Pro Black.
Daler-Rowney Pro Black is an extremely opaque, water-based ink that has superb covering power. Use this ink with brushes, dip pens, or airbrushes on paper, photos, negatives, acetate, and other surfaces. Pro Black can be diluted to make washes, and mixed with Daler-Rowney Pro White to create a full gradient of opaque grays. Made in England.