That sounds like the one I'm using. When I got it I thought it would produce 200 8x10 per litre of concentrated developer. That sounded like a lot so I dropped Agfa a note. They wrote back something like
"Well actually 125 8x10 per litre of working solution so 625 per litre of concentrate" That's using the normal 1:4 dilution and not the economy 1:6.
The funny thing is I've been waiting for it to become old developer so I can try mixing it with some fresh and see how it acts. The thing won't slow down.