EMBLEM OPTIMIZER MI21 is for use at printers from MIMAKI and can replace MIMAKI SS21 inks. This cartridge contains color CYAN. OSI-MI21 Series inks can be used in conjunction with other MIMAKI SS21 inks like Orange, Metallic White and others. When SS21 cartridge is empty just plug in OSI-MI21 cartridge without cleaning. Color matched to MIMAKI SS21 ink there is no need for a new media profile in most situations.