BCH Standard Bulk Magenta Refill Ink 500 ml (16.9 oz) for HP Printers Bulk Standard Dye Ink. Produces vivid true-to-life prints. BCH Technologies is a Certified HP Partner in the United States. Match or Exceed OEM specification on color, pH, surface tension and viscosity. Reliable brand and Big Savings. Get premium image quality at competitive prices. Ideal for printing shop and small businesses. Visit BCHTechnologies for more information on ink grading