InstaInk™ cleaning cartridges are designed for the Epson P400. These cartridges are designed to unclog prints heads or for changing over from Epson OEM inks to InstaInk™. It is recommended to do head cleanings through the Epson system before trying to use cleaning cartridges for clogged heads.
Note: Do not leave cleaning fluid in machine for an extended period of time. Fluid should be purged from system as soon as possible and no longer than a 24 hour period.