of Ansco 120 or Beer's 1. Those last two, BTW, the same
formula save for the concentration of the stock solutions.
I've activated with sulfite alone, D23, and could not see
any difference though paper slower and slower to develop.
Add hydroquinone and you'll see a real change in contrast.
May be as good or better than Beer's 1 through 7 as a
contrast control developer. Dan