Anyone tried MCM100 (From "Developer's Cookbook" by Bill Troop?(posted 8414 days ago)I have mixed it several times and the result is:
1. Mixed as per given formula, the unused developer changes to dark color and substantially weakens in strength after one week.
2. Left out the sodium phosphate tribasic for storage. The mixture darkens in color in two weeks time and looses strength.
3. Mixed catechol and ppd with sodium bisulfite for storege. The solution keeps about four weeks then darkens and looses strength.
In all above cases the solutions are unused after mixing and stored in glass-stoppered brown bottles to the brim and stored in fridge.
I preferred to mix at large quantities because of the toxicity of ppd in powdered form. Can anyone help me?