Canon PFI-3700 inks are compatible with the Canon imagePROGRAF PRO-2600, PRO-4600, PRO-6600, GP-4600S, and GP-6600S printers.
Photo Cyan, Photo Magenta, Photo Gray, Red, Blue, and Chroma Optimizer are only compatible with the PRO-Series.
These inks are 700ml.
Canon printers are designed for only Canon ink cartridges.