These genuine HP 15 Black OEM ink cartridges (C6615D) can be used with HP Deskjet 810c, HP Deskjet 812c, HP Deskjet 825c, HP Deskjet 840c, HP Deskjet 841c, HP Deskjet 842c, HP Deskjet 843c, HP Deskjet 845c, HP Deskjet 920c, HP Deskjet 940c, HP Deskjet 3820, HP Fax 1230/xi, HP PSC 500/xi, 750, 950, HP Officejet 5110 series, v40, HP Digital Copier Printer 310. These HP 15 black OEM ink cartridges contain 25ml of ink.