Yes, for one-shot use, that's the correct minimum quantity of concentrate per 80 square inches of film.
Originally Posted by Robert Ridyard
There are many who will report that they use less and doing so "works fine." If you too wish to gamble, follow their example. Only by using the minimum quantity of concentrate can you absolutely count on repeatable results regardless of what the scenes you photograph exhibit in terms of average brightness. Using less developer means that, depending on scene makeup, you might under develop or you might not.
Some other developers' minimums (concentrate or, for powder developers, stock solution) are:
Xtol - 100 ml
D-76 / ID-11 / Perceptol: 250 ml
Rodinal - 10 ml
HC-110 / Ilfotec HC - 6 ml
Shoot craps or be confident; the choice is yours.