Preserve detail where it matters most with HP 728 300-ml Matte Black DesignJet Ink. Designed for compatible HP DesignJet systems, this OEM cartridge supports precise black density for technical documents, CAD drawings, and large-format graphics that demand clean edges and reliable output. The 300 ml capacity helps reduce cartridge changes in busy production environments, making it a practical choice for teams that print frequently and need predictable supply planning. As an original HP consumable, it is engineered to work within the printer’s intended ink system, helping maintain output consistency across long print runs. For organizations producing client-facing plans, engineering sets, or review plots, matte black ink quality directly affects readability and presentation. This cartridge is suited to environments where output quality, printer compatibility, and supply reliability carry more weight than the lowest upfront price. Choose it when the cost of reprints, downtime, or inconsistent blacks is higher than the premium for OEM supply.