The HP 925 Black Original Ink Cartridge (part 4K0V9PE) is a standard-capacity genuine HP black ink cartridge for the HP OfficeJet Pro 8100 series business all-in-one printers. HP lists it for the OfficeJet Pro 8120e, 8130e and 8135e, and the OfficeJet Pro 8122, 8123, 8124, 8125, 8128, 8132, 8134, 8135, 8138 and 8139 All-in-One Printers; the supplier's listing also mentions the OfficeJet Pro 8310 series. It is rated at approximately 500 pages. HP describes the 925 inks as producing business documents with vibrant colours and sharp black text, with the dependable performance of original HP supplies. The pack contains one cartridge in HP's hanging card retail pack (the "Blister" in the supplier name). For higher-volume printing, HP also offers 925e EvoMore cartridges with roughly double the yield in the same printers. Check the cartridge number on your printer before ordering, since the 925 is not interchangeable with the 938 used in the larger OfficeJet Pro 9100 and 9700 models. Empties can be recycled via HP Planet Partners where available.