Hello T. Epson uses ISO/IEC 24711 tests to determine page yield. Your results can vary based on printer model, print settings, image size, paper type, etc. A new set of T822 XL Epson ink cartridges can print approximately 1,100 Black or 1,100 Color ISO pages. Please visit our official Epson Support page for more details. Regards, Kevin - The Epson Team.