The HP DesignJet T920, T930, T1500, T1530, T2500 and T2530, including the PostScript models, with the HP 727 printhead (B3P06A). The newer T1600 and T2600 use HP 730 ink instead, even though they share the same printhead.

Yes. Each slot accepts either size, so you can run a 300 ml matte black next to 130 ml colours. That is the usual set-up for CAD offices, because matte black does most of the work on line drawings.

Original HP cartridges are covered until the ink runs out or the warranty-end date printed on the cartridge, whichever comes first. HP's printer warranty does not cover damage or repairs caused by non-HP, refilled or expired cartridges, so genuine ink also protects the printhead and the plotter itself.

Yes, when we have short-dated stock: genuine, sealed HP 727 cartridges with a warranty-end date that is close, sold below the regular price. They suit busy printers that will use the ink before that date. Check the separate short-dated HP 727 listing for availability.