Ilford IF-2 Acid-hypo Fixer

This is a non-hardening acid fixer intended for use with films, plates and papers.

Warm water (52C or 125F) . . . 500cc
Sodium Thiosulphate (hypo), cryst . . . 200g
Potassium Metabisulphite . . . 12.5g
Add water to make . . . 1 litre

Films and Plates: Use at Stock strength, undiluted. Fix for 10-20 minutes.
Papers: Dilute 1:1 for use. Fix from 5-10 minutes.

For more rapid fixing times with use on films and plates the quantities of hypo and metabisulphite may be doubled for THIS formula.