HP®91 Compatible


Formulated to deliver the highest performance with even greater image quality, highly accurate OEM color reproduction & superior print longevity, STS ultra premium ink is manufactured to the highest standards specifically for Hewlett Packard’s Designjet Z6100 series. This ultra premium pigment based ink also provides exceptional durability & media compatibility.

Our colors are a dead on match of the original OEM and since it’s so incredibly close to the original there’s no need to change the color profile or flush the lines, It’s Plug & Play just like the original.

STS ultra premium ink is Made in the USA for outstanding quality and performance you can count on.


Available ink colors:  (Hover for image preview)

For custom PMS/Pantone colors contact us

View and download the MSDS/SDS below(PDF opens in a new window. Copy and print are restricted. Contact us for unrestricted access.)

Available in the following packages:

Packaging Type

  • Cartridge


  • 775 mL


Works with the following printers:

Printer Model HP DesignJet 4000 Series

  • DesignJet 4020
  • DesignJet 4500
  • DesignJet 4500MFP
  • DesignJet 4500ps
  • DesignJet 4520
  • DesignJet 4520 HD
  • DesignJet 4520ps

Printer Model HP DesignJet Z Series

  • DesignJet Z6100
  • DesignJet Z6100ps