This purchase replaces 910XL cartridges that did not last nearly as long as past cartridges. With very little printing completed, the cartridges were empty. I don't believe HP is filling the cartridges fully and it is going to cause me to switch printers after more than 20 years of HP printers.
This ink is terrible to open. There are orange levers on each of the ink and you have to twist it to get it off of the cartridge. Very, very difficult. When I have to go get pliers to open ink, there is an issue. HP, needs a lot of work on this and the crummy printer that it goes to.