Compatible 934XL C2P23AN Black Ink Cartridge for HP Replacement. Page Yield: 1,000 pages based on ISO/IEC 24711 standard. This is a compatible HP 934XL black ink cartridge. ReInkMe's 934XLBK ink cartridges are guaranteed to meet the performance standard expected from the OEM original ink cartridge. Our compatible inkjet cartridges are manufactured by ISO9001 / ISO14001 certified factories using highest quality of new and recycled parts. Our cartridges are filled with same ink capacity (ml in volume) as in new OEM cartridges to give full page yield.