
If the original solution strengths are in grams/gram of solution, it's easy enough at least to get the weights. I then calculate:
34 grams paminophenol
167 grams K2SO3 or 133 grams Na2SO3
17 grams KOH or 12 grams NaOH
and I'm assuming that the total volume at the factory will be 500 liters, but my calculated weights would work for 500 ml. These are close to the proportions I have been using in my homebrew. I'll bet there would have been much less difference between the illustrating photos if these proportions had been used. The 12 grams of NaOH with 34 grams of paminophenol will leave a little precipitate. If you leave it for 2 weeks, most of that may be used up by aerial oxidation as all the air in the original mixture takes a while to work. The oxidation of the aminophenol in the presence of sulfite makes a monosulfonate and the hydroxide, which make some of the precipitate soluble and active as developer. The solution will also darken somewhat over time as a little oxidized aminophenol makes a lot of dark.