This compensating developer in two parts has an excellent reputation, particularly when used with Kodak Tri-X. The idea is to develop shadows and highlights somehow “separately” (gross shortcut here as I can’t explain the compensating effect now). I will certainly come back to that in a proper blog post.
The two parts should always be separated, never mixed nor contaminated by one another.
So it’s quite important, at least for “clumsy-me”, to properly label my chems cans on all sides, including the srew caps as they can be confused easily.
Metric system boys! it’s not that hard!
Anyways, here are the suggested Exposure Index (click on the image to enlarge) not too shabby!
You should dissolve to obtain a concentrate. You can that further dissolve to a working solution. I guess you can also use the concentrate as a replenisher.