- When printer prompts ink low, remove the cartridge, check actual ink level from the transparent side panel.
- Remove the filling hole plug, inject appropriate amount of ink using our easy filling ink bottle or a syringe (sold separately) until the cartridge is about 90% full.
- Plug the filling hole with the rubber plug.
- Install the cartridge back into the printer, run a print test.
That's it! It's that simple! Whole process takes less than 1 minute.