Easy Refill Kit for Canon PG-540 Black Cartridge - Refill Adaptor + 3 Filling for PG-540 Black / PG-540 Black XL. With this set you can easily fill your cartridges yourself: Amazon.co.uk:
540 CL-541 CL541 540XL INK CARTRIDGE REFILL KIT ***118INK Refilling kit*** BLACK AND COLOUR Compatible with Canon Pixma MG3650 MG 3650 PG Ink Refills & Kits vervetalent Computers & Accessories