Yes - 1L of chemistry, but you can use a replenisher developer such as Tmax RS or Xdol and get the same capacity you would got out of D-76 or other one shot developers. This of course also makes sense when doing any color processing where all solutions can be reused to maximize capacity.

Also - it is ideal for stand developing when only a small amount of active material is needed.

If one was to use the Jobo multitank 2 for inversion it would need 1.25L of solution inside the tank.