Maintain dependable yellow output across high-volume print environments with HP 31 70 mL Yellow Original Ink Bottle. Designed for HP Smart Tank series printers, this OEM supply supports the refill-based printing model that helps reduce interruptions and keeps color documents moving without frequent cartridge changes. For teams that print regularly, original HP ink matters. It helps preserve color consistency, supports predictable results from page to page, and aligns with the printer’s ink delivery system for cleaner refills and less waste than traditional cartridge swaps. That makes it a practical choice for offices that need reliable output for internal reports, presentations, forms, and everyday color documents. The 70 mL bottle format is built for volume-conscious users who want lower cost per page without sacrificing print quality. As an original HP supply, it is the right fit for Smart Tank owners who want to protect printer performance and avoid the variability that can come with non-OEM alternatives. If your workflow depends on steady color output and fewer supply interruptions, this bottle is made for that job.