How to tell if HPPSC 1510 ink cartridge is full or not

[marcyskinzy]

Hi I have a HPPSC 1510 printer and a family member of mine mixed up the new and the old ink cartribge. How do you tell what cartribge is good?

 

[soundguruman]

Any cartridge that is low on ink triggers a pop up alert on your screen.
So, if you are not getting the alert, the cartridge still has ink.
Keep using it, until it runs low, and the message will be displayed, over and over, until you put in another good cartridge.