This cleaning cartridge is used for cleaning and flushing the ink delivery system on all Mimaki Mild Solvent printers. The cleaning liquid inside the cartridge is compatible with SS21, HS and ES3 inks. This is the original Mimaki cleaning liquid (part number SPC-0294 replacing SPC-0407). This cleaning liquid is not compatible with water based and transfer sublimation inks. Also it is suitable for being inserted in the rear slot for cleaning cartridge.