The development of PMK is credited to Gordon Hutchings, who sought to create a universal developer based on one of the oldest developing agents, pyrogallol.
The developer is mixed from two liquids, Part A and Part B; you get double of Part B than Part A as you mix the working solution in a 1+2+100 dilution in almost all cases.
Because of the dilute nature of the developer, a simple water stop bath will suffice, and an alkaline fixer is also recommended to help preserve the stain on the negative.
One of the best parts is that if properly stored, cool, dry and dark, the developer will last for years.
