Page yield is the approximate number of pages that can be printed with a particular cartridge. Since everyone’s printing habits are different, actual page yield can vary from user to user. In order to hold manufacturers accountable to the same standards, every ink cartridge is subjected to page yield testing based on ISO/IEC 24711 specifications. This test helps determine what the page yield of an ink cartridge will be, giving customers a reliable way to compare competing products. The manufacturer’s cited page yield for ink and toner cartridges is given at 5% coverage. This means that the quoted page yield is based upon printed pages where only 5% of the page has been imprinted with ink. This comes out to be a small amount of imprinted ink – roughly one quarter of the page. For example, a short memo has approximately 5% coverage. If you are printing letters, using legal size paper, printing photos, web pages or any type of graphics, your coverage will vary greatly and your page yield will drop significantly.