DEVELOPING-OUT PAPERS Zils 
Water 1000 ccm 40 oz. 
DEFENDER PROFESSIONAL PAPER.— 
Metol 0.77 g Sen 
Sodium sulphite, dry Ws) es VY, oz. 
Hydrochinon 3¢ 60 gr. 
Sodium carbonate, dry 12.5¢ V4 oz. 
Water 1000 ccm 40 oz. 
Potassium bromide, 
sat. sol. _ 25to70drops 30 to 80 drops 
The quantity of bromide determines the tone; with the small- 
est quantity a comparatively cold tone cone with from 1 to 
1% minutes development for correctly exposed prints. 
Alternative developer for black and white prints : 
1. Metol 2¢g 150 gr. 
Sodium sulphite, dry 33.3 g 3 Oz: 
Hydrochinon 8.3 ¢ 1% oz. 
Water 1000 ccm 150 oz. 
2. Sodium carbonate, dry 100 g 3 oz. 
Water 1000 ccm 30 oz. 
For use mix: 
Solution No. 1 312.5 ccm 10 oz. 
Solution No. 2 62.5 ccm Zz 
Water 625 ccm 20 oz. 
Potassium bromide 75 (3 $B ace 
Develop from 1% to 3 minutes. Special stress is laid on the 
necessity of increasing the quantity of bromide with increase 
of the temperature of the developer. 
GEVAERT VITTEX (rapid gas-light paper). —For vigorous 
prints: 
A. Metol 0.9¢ 13 gr. 
Sodium sulphite, cryst. 35 g 1 oz. 
Hydrochinon 39) 50 gr. 
Potassium carbonate, cryst. 70g 2 oz. 
