Each Genuine HP 89A - CF289A Black Toner Cartridge is made in alignment with HP's own stringent manufacturing standards using high-grade most durable components and non-toxic materials to guarantee performance, reliability and longevity. Furthermore, to ensure these attributes are definitively achieved, each cartridge is thoroughly examined at particular production and development points and then when complete, it is then rigorously test trialled on a series of quality, capacity, reliability and longevity criteria standard benchmarks. Only then is does the cartridge in question receive approval certification for distribution.