DIY/Homebrew PMK Pyro
Also known as: PMK, Pyrogallol-Metol-Kodalk
Gordon Hutchings' pyrogallol-metol formula from 'The Book of Pyro'. Creates proportional stain that acts as contrast mask, providing extraordinary highlight separation. The stain image prints on silver gelatin and alternative processes. Two-solution formula mixes fresh. Requires careful handling due to pyrogallol toxicity. Best with slow to medium films.
Temperature
20°C
18–24°C
Dilutions
1
Form
Liquid
Characteristics
Extraordinary highlight separation with proportional staining
Dilutions
Standard dilution: 1 part A + 2 parts B + 100 parts water. Develop with minimal agitation.
Shelf Life
Concentrate
Part A: 2+ years. Part B: 6+ months
Working Solution
Use immediately, discard after use
One-shot only. Used developer should be discarded.
Often Used For
Limitations & Warnings
- Pyrogallol is toxic - handle with care
- Staining can affect scanning
- Must mix from raw chemicals or buy kits
- Requires precise technique
Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.