Epson T800400 UltraChrome PRO ink cartridge, Yellow, 700 ml

Yellow is one of the primary printing colours: together with cyan and magenta it builds most of the tones a printer lays down. When the yellow cartridge runs dry, greens, oranges and skin tones drift quickly. The T800400 refills exactly this channel with UltraChrome PRO ink from the same family as the printer's other cartridges.

A 700 ml cartridge is sized for large-format equipment. Wide prints use a lot of ink, and a small cartridge would mean constant swapping. The larger volume lets long runs finish without someone standing by the machine. How many sheets or square metres one cartridge delivers is not stated in the manufacturer data.

The manufacturer data lists the SureColor P20000 as the compatible printer, and no other models appear on the list. If your printer is a different model, check its manual or menu for the cartridge code it takes before ordering, so an expensive cartridge does not end up sitting unused on a shelf.

Epson cartridges often differ by just a couple of digits, so it is worth comparing the code with the label on the old cartridge. This one is T800400 from the UltraChrome PRO family. It comes as a single cartridge, so you replace only the colour that is empty instead of ordering a whole set.

SureColor P20000 owners such as photo studios, print shops, sign makers and design offices where the yellow ink is running low and the printer has to keep going. Purchasing staff who keep a spare cartridge in stock so a swap never waits for a supplier. And anyone who prefers ink from the printer maker itself.