The Barva E103-690e is a black water-soluble dye ink designed for use with Epson 103 series and EcoTank printers. Each 65 ml bottle features a OneKey keyed design, which ensures you can only insert the ink into the correct tank, preventing accidental color mixing during refills. Produced in Ukraine under ISO 9001:2015 and ISO 14001:2015 certifications, this ink is suitable for inkjet printers, refillable cartridges, and continuous ink supply systems. It works seamlessly alongside original consumables or other third-party analogs and maintains its quality for up to 3 years on the shelf.