The standard capacity Epson C13T596400 is the cheapest yellow ink cartridge available and as such offers the lowest initial cost in getting the Epson Stylus Pro WT7900 and all other compatible printers up and running. This T596400 and the entire range of cartridges have been designed specifically to work with high end Epson printer, where print quality and results are of the utmost importance. With this in mind, purchasing genuine cartridges like the Epson T5964 yellow ink cartridge makes perfect sense.This C13T596400 cartridge is filled with an unbelievable 350ml of premium quality Epson ink that is resistant to fading and a whole host of environmental factors to ensure long lasting, satisfying prints.