Keep color output steady and refill cycles under control with the HP 31 70 mL Cyan Original Ink Bottle. Built for HP Smart Tank series printers, this OEM supply is designed to deliver dependable cyan coverage for offices that print frequently and need predictable results without constant cartridge changes. The bottle format supports high-volume ink tank workflows, helping reduce downtime and simplify supply management. For teams producing presentations, charts, marketing collateral, and internal documents, original HP ink helps preserve color consistency from first page to last. That matters when print quality reflects the professionalism of the business behind it. As an original HP supply, this bottle is intended to work with compatible Smart Tank systems as part of a controlled ink delivery setup. The 70 mL fill size gives procurement teams a practical balance of capacity and replenishment cadence, making it a strong fit for environments that value lower intervention and reliable output over bargain-bin uncertainty. If your print fleet depends on repeatable color and efficient operation, this is the kind of supply that earns its place.