Thus: recognition and printed image are impeccable. And that is what counts at the originals. So far I had no problems when it comes to the level of the cartridges. I have already made to the test and a blank at least showed me the printer that fact to - open cartridge (violently). There were only even drop it. Accordingly, I trust HP in this regard.
The XL version of the 901er cartridge contains a whopping 14ml ink, unlike the conventional variant with only 4ml (manufacturer's instructions). According to HP, in order to get 700 pages long. I must confess to my shame that I have not been counted ... The difference whether XL or normal, however, is noticeably huge.
If you have any questions or you found the review helpful? About comments and an evaluation would be very happy.