Some things to consider prior to the purchase of an ink cartridge are its size, kind and color. Not all ink cartridges work with every printer, nor does every color; for example, there are different variations of black that will not print unless installed on a compatible printer. All these differences are specified on the cartridge itself by a number, color or size.
Ink cartridges are generally separated into two categories: toner and ink. Regular printers utilize normal ink cartridges that last up to 500 pages, while inkjet printers use special toner cartridges that can last upwards of 2,000 pages.