Polaroid CE250A Replacement Toner Cartridge for HP 504A - Black High performance, guaranteed replacement toner cartridge from Polaroid, the leader in digital imaging. Black replacement toner for HP Color LaserJet CP3525x, CP3525n, CP3525dn, CP3525, CP3530, CM3530, CM3530fs. Approximate yield: 5000 pages at 5% page coverage Smart engineering means a perfect fit for your machine while providing the same performance and reliability as original HP supplies. Helps protect our environment by containing recycled components, resulting in over 90% of the original cartridge's non-wearing parts from needlessly clogging landfills.