Ammonium Thiosulphate High Speed Fixer

Ammonium Thiosulphate :- 175 grammes Sodium Sulphite, anhydrous :- 25 grammes Glacial acetic acid ( 98 - 100%) :- 10ml Boric acid ( crystalline ) :- 10 grammes Water to :- 1000ml.

This fixer has a long working life with a fixing time of 30 - 90 seconds for film and papers. It can be diluted 1 + 1 with an increase in fixing time.