HP No.21 Black Ink Cartridge - 185 pages

 1,830 pages. Designed for Business Inkjet 1000, Business Inkjet 1100, Business Inkjet 1200, Business Inkjet 2200, Business Inkjet 2230, Business Inkjet 2250, Business Inkjet 2280, Business Inkjet 2280TN, Business Inkjet 2300, Business Inkjet 2300N, Business Inkjet 2300DTN, Business Inkjet 2600, Business Inkjet 2800, Business Inkjet 2800DT, Business Inkjet 2800DTN, COLOR PRINTER CP1700, COLOR PRINTER CP1700D, COLOR PRINTER CP1700PS, Officejet 9100, Officejet 9110, Officejet 9120, Officejet 9130, Officejet Pro K850, Officejet Pro K850DN, DesignJet 111