Refilling original OEM printer ink cartridges can be a messy business. Manufacturers did not design their cartridges to be refilled; they prefer you buy a new one each time. Of course, this does nothing to protect the environment, so refilling and reusing cartridges makes sense.
The Canon Pixma MG5400, MG5450, MG5550, MG5650, MG6300, MG6350, iP7250, MX725, and MX925 printers use the PGI-550 BK and CLI-551 series cartridges. These cartridges are containers of ink with a smart chip that click into a print head that is built into the printer. Refilling them involves drilling holes in the top of the cartridges and injecting ink into them.
Modern day cartridges hold far less ink than traditional ink cartridges. For example, the PGI-550 and CLI-551 only hold 3ml to 4ml of refilling ink. Much of the internal cartridges is blanked off; making an unused empty space. Therefore with the lower capacity, more frequent refilling is needed. In contrast, purpose made refillable reusable cartridges for Canon PGI-550 BK and CLI-551 BK/C/M/Y
hold approximately 15ml to 10ml per refill. They also benefit from a dedicated refill hole with a rubber plug, and automatically resetting microchips, making the refill process far easier and more successful. Because of this, we discourage customers from refilling original Canon 550/551 cartridges. However, if you are determined to try this then please see our comprehensive instructions in our news blog...