The American annual of photography (1911) (14596716278)

Identifier: americanannualof1911newy (find matches)
Title: The American annual of photography
Year: 1911 (1910s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University



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nt. The excellence of this solution is due largely to the fact that it contains little sodium sulphite, a chemical which in tank work causes chemical fog if present in great amount. Notwith-standing the great dilution, and the small amount of pre-servative, the used developer keeps for months in a well-corked jug filled to the neck. The stock solution is as follows: Glycin 120 grains Sulphite of soda, anhydrous 360 Carbonate of soda, 360 Hot water 35 ounces For use, dilute one part with three parts of water. The method of compounding is extremely important. First dis-solve the carbonate in the hot water, next, the sulphite, and,last of all, the glycin. This solution, properly dissolved and used at from 50° to 60° F. will give clear, fog-free, dense negatives from over-exposed plates, and will also develop out full detail in under-timed plates without making the high-lights im-printably dense. A glycin negative has almost ideal printing quality for a great variety of printing processes. 126
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