Special designed for HP pro 8000/8500 1, Special designed for HP pro 8000/8500(HP 940/940xl) 2, Full compatible with the OEM or non-OEM pigment based ink 3, No need for cleaning the residual ink of the ink pipe when replacing with our ink. 4, Suitable for high speed printer compatible Dye ink for HP officejet pro8000,pro8500(pro 8000/8500,940XL/940)