Since 1864, Diamine has produced fine inks known for their excellent flow, lubrication, and shading. Stock up with a five-pack of your favorites from the Liverpool-born company’s line of 108 colors—now in smaller plastic bottles that are easy to stow away in luggage and day bags, and carry with you wherever you go. Each bottle contains 30 milliliters of ink, whose gentle formula is safe for use in all fountain pens.