The Agfa book of Photographic Formulae

Cover The Agfa book of Photographic Formulae
The Agfa book of Photographic Formulae
George L George Lafayette Barrows
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. \ l /2 ozs.
To develop use A, l / 2 oz. ; B, 1 oz. ; C, 1 oz. ; water, 7 ozs.
"AGFA"-METOL-HYDRO FORMULA FOR TRAY DEVELOP- MENT.
Stock Solution.
Water 16 ozs.
"Agfa"-Metol 30 grs.
Eastman Sulphite Soda */ 2 oz.
"Agfa"-Hydrokinone 30 grs.
Eastman Carbonate of Soda % oz.
Dissolve chemicals in order given. To develop use Stock Solution, 1 oz. ; water, 7 ozs.
The temperature of Developer should be from 65 to 70 degrees.
NOTE. If other brands of desiccated Carbonate of Soda are used, a greater qua
...ntity will be required. If crystal sodas are used, take about three times the quantity of carbonate and double the quantity of sulphite.
Carbonate of Soda has a decided action as regards the density of the negative. An increased amount will increase the density of the negative.
THE "AGFA" BOOK. 65 If the Carbonate of Soda be added to the developer in excessive quantities, it will neutralize the action of the pre- servative (Sulphite Soda) and have a tendency to produce yellow negatives.
"AGFA"-PYRO FORMULA FOR TANK DEVELOPMENT.


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