I replaced the cartridge of the same type in January 2019 and in September 2019 it was dry and this is only when I use a few pages a month at home , not dozens of pages, but fewer than the average 5 = 8.5 x 11 inch pages! Very bad durability. These cartridges are found in the HP 6600 All-in-One Printer. When I had to replace this cartridge in January 2019, I thought it was too soon that it was empty, but yes, the monitoring program said "sorry, you have run out of black ink." The printer worked great, I just can't get much time out of the ink cartridges for this printer. I had a 950C and the cartridges lasted a very long time, just an issue with windows couldn't provide a driver to communicate with and it was a very good all in one printer.
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