This is an exceedingly energetic developer intended for plates which have received minimum exposures.

On account of the yellowish colour of the image even very weak negatives may have good printing contrast.

Working solutions
Mix chemicals in order.
Solution A
Potassium metabisulfite6grams
Pyrogallic acid6grams
Water to make0.5liters
Solution B
Sodium carbonate crystalline100grams
Water to make0.5liters

For use, mix equal parts of Solution A and B.