The original Canon 3731C001 ink cartridge is the standard capacity offering that offers a great cost per page. Compatible with several Canon Pixma TS series inkjet printers, the CL-561s 180 page yield means your machine will be up and running for some time.This CL-561 cartridge contains a total of 8.3ml of top-quality Canon cyan, magenta and yellow ink, that offers you the very best results available for your printer. As a genuine Canon 3731C001 FINE cartridge the ink comes directly from the cartridge and its brand new print head, meaning replacing the cartridge also refreshes the quality of your prints.