The Epson 603XL black ink cartridge contains 8.9ml of ink, a larger volume than the other colors in the same series. It uses pigmented black ink and dye-based color inks, a combination that guarantees crisp text and vibrant colors in printed photos and images. Being XL, it has a higher ink capacity compared to the standard 603 version, reducing the frequency of replacement for those who print regularly. It is compatible with Epson XP-2100, XP-2105, XP-3100, XP-4100, WF-2810, WF-2830, WF-2835 and WF-2850 printers. It is a preferred option for those who print large volumes of text on one of these printers.