Universal developer for processing black and white photographic materials - photo paper and film (a set of reagents for the preparation of 1 liter of solution)

A very old recipe tested by generations of photographers. It was once used as a "standard" for testing the properties of photographic materials

Contains :

•   Methol
  
•   Hydroquinone
•   Sodium sulfite
•  sodium carbonate anhydrous 
•   Potassium bromide