Genuine Epson 112 EcoTank Cartridge with Ink Bottle, 70ml The number of Ecotank pigments in the Magenta ink bottle is 112. All pigment inks for smudge and highlighter-resistant prints are included in the quick-drying EcoTank 112 ink series. You can be certain that this dependable and superior ink will produce excellent prints with crisp text and vibrant colors. With a single set of ink, you can