This Canon CLI-42Y ink cartridge has been produced from scratch to offer compatibility with the Canon Pixma Pro-100 and all other compatible printers. Great care has been taken to ensure that the high quality yellow ink within this compatible 6387B001 flows freely from the cartridge and offers exceptional print quality. The 13ml of dye based yellow ink within our Canon compatible CLI42Y cartridges has been designed to mimic the colours produced by the genuine article, meaning telling the difference between the two will be a challenge. Whilst our compatible 6387B001 ink cartridges do not offer the 200+ years colour fastness protection of the Canon ChromaLife100+ ink, they are ideal for everyday printing in a home or small office environment.