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Keith Tapscott.
22nd November 2011, 11:25 AM
From "The Print" by Ansel Adams. (page 191).

Ansco 120

Water (125*F, 52*C) 750 ml

Metol (Elon) 12.3 grams

Sodium Sulphite, anhydrous 36 grams

Sodium carbonate, anhydrous 30 grams

Potassium bromide 1.8 grams

Cold water to make 1 litre of stock-solution.

This is a very soft working developer using metol only, and it gives good print colour. In effect, it is quite similar to Kodak Selectol-Soft developer.
It is usually diluted 1+2 or more for use, with 1.5 to 3 minute developing times, although it it can be used at full-strength.