DEVELOPING-OUT PAPERS 209 
Sodium sulphite, dry NZS) (2 Y oz. 
Hydrochinon 312 ¢ 60 gr. 
Sodium carbonate, dry Nei VY, oz. 
Water 1000 ccm 40 oz. 
Add one drop saturated potassium bromide solution to every 
2 oz. of developer (1 ccm to every liter). ‘Times of develop- 
ment at 18° C. (65° F.): Portraya 1% to 2, Industro 144 to 
134, Rito 3% to 1%, Kalo 1 to 1%, Enlarging 1% to 134 
minutes. The use of Kalo (slow speed) or Rito (fast speed) 
with the following developer gives cold, neutral or blue-black 
tones : 
Metol 5g Y, oz. 
Sodium sulphite, dry TI 74 02. 
Hydrochinon 20 g 2. OZ. 
Sodium carbonate, dry 125¢ 12 oz. 
Potassium bromide 2g 100 er. 
Hot water 1000 ccm 100 oz. 
For use mix 1 part stock solution with 3 parts water. 
Hatow Kato & Rito.—For neutral black tones: 
Metol 0.78 g Son: 
Sodium sulphite, dry 5) YZ oz. 
Hydrochinon 3.12); 60 gr. 
Sodium carbonate, dry 22S 420 er. 
Water 1000 ccm 40 oz. 
Add one drop saturated solution potassium bromide to each 
two ounces of developer (1 ccm to every liter). 
Awsco Cyxo PAPER.— 
Metol 0.78 gr. 15 gr. 
Sodium sulphite, dry 25s 1 oz. 
Hydrochinon 3.12 ¢g 60 gr. 
Sodium carbonate, dry 18.75 g 34 02. 
Potassium bromide 0.26 g 5 gr. 
