Refilling Canon PG-545 & PG-545XL Black Ink Cartridges
How to Refill Canon cartridge CL-546 CL-546XL - YouTube
How to refill Canon cartridge PG-545 PG-545XL MG3050 C - YouTube
refill24: refill Kit for Ink Cartridges, Compatible with Canon 545, 546, 545 XL, 546 XL Black and Colour, Includes Clip and Accessories + 400 ml Ink : Amazon.co.uk: Computers & Accessories