Ordered a complete set of cartridges for my Canon printer. The cyan cartridge did not register right with the printer and said it was nearing empty. I had no problem with any of the other cartridges. The only thing I could see different was that the electrical contacts had scratches on them. Not sure if that was the problem, but I have since returned them to the company. In the meantime I did order a replacement set for my current cartridges. I am pleased with the other cartridges, just this one was defective. So before I give a totally negative comment, I will see how these work next time.