Bulk Ink for ALL inkjet printers. We offer a variety of bulk ink sizes to choose from for your inkjet printer / inkjet cartridge. DuraFirm Technology ink (all-brand inkjet ink) is available in 60ml, 250ml, 1 liter, 1 gallon and pail (5 gallon) bulk ink sizes. Our ink is all-brand, which means it will work on ANY inkjet cartridge, guaranteed! What's more, this ink is engineered and manufactured in the USA and has been carefully engineered to produce sharp, vivid prints in line with the original cartridge quality. This refill ink works in all inkjet printers including Epson inkjet printers, Lexmark inkjet printers, HP inkjet, Xerox inkjet, Dell inkjet, Canon inkjet cartridges and more. Our bulk ink offers you the convenience of being able to refill ANY inkjet cartridge without compromising print quality. Bulk Ink is intended for repeat refill customers, wholesale customers, and refill / remanufacturing businesses. Bulk Ink is the way to go if you already know how to refill and are looking to save even more on your print jobs, especially if you do a lot of printing.