BCH Standard 500 ml (16.9 oz) Black Refill Ink for All Printers HP CAN EPSN LEX Standard Bulk Refill Dye Ink. Produces vivid true-to-life prints. 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. BCH is a Certified HP Partner