Solution B
Sodium sulphite40
Solution C
Sodium carbonate75
Or if potassium carbonate is preferred instead of sodium:
Solution C
Potassium carbonate60

For standard formula for dry plates and films, mix

Solution A1 part
Solution B1 part
Solution C1 part
Water7 parts

For strong negatives (for aristo-platino):

Solution A1 1/2 to 2 parts
Solution B1 part
Solution C1 part
Water4 to 4 1/2 parts

For tank development:

Solution A 1 part
Solution B 1 part
Solution C 1 part
Water35 parts

For developing paper:

Solution A2 parts
Solution B2 parts
Solution C1 part

The reading of the hydrometer for stock solutions is the same whether dried chemicals or crystals are used. No water is used.