Water (50c) 600ml
SODIUM SULPHITE (Anhyd) 50.0g
SODIUM HYDROXIDE 4.0g
SODIUM THIOSULPHATE (Hypo) 110.0g
WATER To make 1 Litre
Do not dilute for use.
Process for 6 min's at 20c. Agitation for first 30 seconds then 15 sec's every minute on the minute. To adjust the contrast use greater or lesser amounts of Hypo. Use of more will result in a softer image, less increases contrast.
I have not tried this myself but saved this formulae because I'm dying to give it a try sometime. Have fun!