This Epson compatible 35XL T3591 black is a great value ink cartridge specifically designed to work in your Epson printer. The Epson 35XL T3591 ink black cartridge is a replacement compatible non-oem cartridges. The 35XL T3591 printer cartridge black is suitable for all types of printing and is the best single black cartridge we offer. Fully chipped and ready to go. All our compatible Epson premium inks are made to highest standards and carry the ISO9001 worldwide quality certification. Our inks are formulated to each printer\\\'s individual specification ensuring perfect results every time. Offering a much higher printing quality than universal inks. Which are unfortunately widely used in the UK by other inferior cartridge manufacturers and distributors. The 35XL T3591 black is filled to 50ml and prints approx 3150 pages at 5% average coverage. That\\\'s a bigger fill than the black original XL original ink cartridge and TRIPLE the standard fill. This cartridges works as both a T3591 & T3581 ink cartridge. Easy to use install and saves over £45 buying the equivalent XL genuine black. WF-4720,WF-4720DWF, WF-4725,WF-4725DWF, WF-4730,WF-4730DTWF, WF-4740,WF-4740DTWF, WF-4740DWF, WorkForce Pro WF-4720,WorkForce Pro WF-4720DWF, WorkForce Pro WF-4725,WorkForce Pro WF-4725DWF, WorkForce Pro WF-4730,WorkForce Pro WF-4730DTWF, WorkForce Pro WF-4740,WorkForce Pro WF-4740DTWF, WorkForce Pro WF-4740DWF, WorkForce Pro WP-4730DTWF, WP-4730DTWF