HP 940 Magenta Officejet Ink Cartridge (C4904AN): * Cartridge color: magenta * Ink drop size: not applicable for cartridges * Ink type: pigment-based * Print technology: HP Thermal Inkjet * Print head nozzles: Not applicable for cartridges * Page yield color: 900 pages * Page yield footnote: Tested in HP Officejet Pro 8500 All-in-One Printer. Average based on ISO/IEC 24711 or HP testing methodology and continuous printing. Actual yield varies considerably based on content of printed pages and other factors. For details see http://www.hp.com/go/learnaboutsupplies