This professionally remanufactured Epson black (T033120) inkjet cartridge is an original Epson T0331/T033120 ink-jet cartridge which has been through one cycle of service and has been recharged. This Epson T033120 ink cartridge has been thoroughly cleaned then filled with ink conforming to original specifications and 100% compatible with original Epson ink. Then the internal back pressure was insured and the cartridge was inspected for any possible shell leakage, tested the operation of all electrical circuitry and finally tested under MIL-STD quality standards. The ink monitoring chip on this remanufactured Epson T033120 is the original chip which has been reset to provide accurate ink monitoring. If the T0331 inkjet cartridge passes our rigid standards, it has been remanufactured for your Epson printer! We offer a 100% Quality Satisfaction Guarantee on our remanufactured T033120 ink cartridge.