116 PHOTOGRAPHIC FACTS AND FORMULAS 
A. Sodium or potassium bisulphite 11.7 g 
Pyrogallol 62.5¢ 
Water 1000 ccm 
B. Sodium sulphite, dry 94¢g 
Water 1000 ccm 
C. Sodium carbonate, dry 782 
Water 1000 ccm 
For use mix 1 part A, 1 part B, 1 part C, 
For tank developer : 
A. Sodium or potassium bisulphite 9g 
Potassium bromide 0.9¢ 
Pyrogallol 62.5 ¢ 
Water 1000 ccm 
B. Sodium sulphite, dry 109 g 
Water 1000 ccm 
C. Sodium carbonate, dry 78g 
Water 1000 ccm 
For use mix 
A solution 36 ccm 
B solution 36 ccm 
C solution 36 ccm 
Water to 1000 ccm 
Temperature 65° F. Develop 15 minutes. 
For Seed 30 and Graflex plates use: 
A solution 47 ccm 
B solution 47 ccm 
C solution 47 ccm 
Water to 1000 ccm 
Temperature 65° F. Develop 15 minutes. 
90 gr. 
1 oz. 
16 oz. 
1¥4 oz. 
16 oz. 
1% oz. 
16 oz. 
and 7 parts water. 
70 gr. 
7 eae 
1 oz. 
16 oz. 
134 oz. 
16 oz. 
1% oz. 
16 oz. 
4¥4 oz. 
4¥4 oz. 
4¥4 oz. 
128 oz. 
6 oz. 
6 oz. 
6 oz. 
128 oz. 
Pyro-Acetone for Hammer Plates——Stock solutions: 
1. Sodium sulphite 129 ¢g 
Water 1000 ccm 
Hydrometer test, 75°. 
3 02. 
23% oz. 
