This cartridge contains Original Epson UltraChrome Matte Black (MK) ink, designed for use with Epson SC-P6000/P7000/P8000/P9000 inkjet printers.UltraChrome inks allow for high quality prints, high conservation, vibrant colours and deep blacks.700ml ink cartridges offer substantial savings and increased yield The MATT BLACK (MK) ink cartridge is 700 ml format, and has the reference number T55K8. It replaces ref. T8048. This item is also available in 350 ml format. IMPORTANT: The new generation Epson cartridges (T54X.. and T55K..) for SureColor P6000, P7000, P8000 and P9000 are gradually replacing (while supplies last) the current cartridges (T804.. and T9000). 824..), since June 2023. These are still original Epson cartridges containing Ultrachrome HDX/HD inks, which have a reputation for quality. The only difference between these two generations is the presence of a new chip free of ILS (Ink Level Sensor, or ink level sensor). In the absence of this element used to accurately count the number of ml used, the consumption will be calculated/estimated according to the printing modes and will then be recorded in the new chip.To use these new cartridges, or a mixed cartridge with and without ILS, it is necessary to update the firmware of the printer. It is therefore important to keep the firmware version available on Epson's website up to date. Please refer to the documentation included in the carton of each new generation cartridge.