Photographers' Formulary 01-5060 PMK Film Developer

PMK Formula Film Developer was developed by Gordon Hutchings, and is designed as a universal developer for a wide variety of modern emulsions used under diverse conditions. PMK stands for "Pyro-Metol-Kodalk". Kodak has changed the name Kodalk to Balanced Alkali - this is their proprietary name for sodium metaborate. The formula is constituted to achieve the best overall results in consideration of the following technical criteria: sharpness, maximum image stain, minimum general stain, edge effects, film speed, flexibility for Zone System Plus and Minus development, stability, repeatability, convenience of use and long shelf-life.

• Formerly known as Kodalk
• Highly suited for use with the Zone System
• Long shelf life
• PMK Pyro is a staining-type developer which yields fine grained negatives with superb sharpness and highlight detail
• The 50-liter PMK Liquid Kit is supplied as one-half liter of stock solution A, and one liter of stock solution B to make 50 liters working solution
• An alkaline or pH neutral fixer is recommended for achieving maximum pyro stain on the negative. A conventional rapid fix may diminish staining effects of pyro and PMK formula.