Kodak doesn't make it easy to figure out, but this is what I use. Unopened, it lasts a very, very long time. Each developer three bottle set makes two liters. I think the bleach and fixer last basically forever. You want the last four items on this page.
Editing my own post because I think I was't clear -- the developer kit includes (I think) 5 of the three bottle sets to produce 10 liters total, in five two liter batches. I store these in two one liter batches and it lasts a very long time as long as it is in a stoppered bottle. So you only have to mix two liters at a time.
I use this fixer instead of the tank fixer on the PDI list. It's a lot cheaper. I haven't been able to figure out the difference.