The PMK formula was founded by Gordon Hutchings in order to create another new universal film developer, adapted to a wide range of modern black-and-white films.
Bergger PMK is manufactured in Germany under the original PMK formula upon Bergger's request with original Bergger chemicals.
Bergger PMK has the following characteristics:
High acutance and border sharpness;
Yellow staining, depending on the quantity of developed silver (acts as a local contrast mask);
Very few fog;
Long shelf live of the two stock solutions;
The PMK film developer should be used with an alkaline fixer in order to get the best yellow staining and the best stability.
PMK comes in two parts (A+B) that can be stored endless as long as they are not mixed and the bottels haven't been opened.
When using the standard dilution (1+2+100), 25 liters of working solution can be made.