The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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Stand-Development
Stand-Development. This term is applied to the system of slow development which has recently come into vogue. Saving of time being one considerable advantage, as the development of many plates can go on simultaneously and the plates may be generally left all night. The dilute developers used for stand-development tend largely to balance faults of exposure.
Grooved porcelain baths are now sold for use when stand-development is practised, and under the heading Film Photo-graphy we indicate a device which is the equivalent to film workers. Dilution of the developers is the main difference when stand-development is practised, and all the ordinary developers except Pyro-ammonia and Ferrous oxalate are well suited for stand-development.
We may give a few examples of stand-developers ; these being estimated to give fully developed negatives on properly exposed plates in about ten hours.
Pyro-soda Sulphite. Water (boiled and cooled) ... ...         2 pts.
Sulphite of soda, cryst....... ...        20 grs.
Washing soda ... ... ......       25 ,,
. Pyrogallic acid............         3 ..
Hydroquinone.
Water (boiled and cooled) ......         2 pts.
Sulphite of soda, cryst. ... ... ...         3 ozs.
Hydroquinone ...... ......         \ oz.
Carbonate of Potassium.........       60 grs.
Amidol.
Water (boiled and cooled) ......         2 pts.
Sodium sulphite, cryst..........         | oz.
Amidol ............... 25 grs.
Pyrocatechin.
Water (boiled and cooled) ......         2 pts.
Carbonate of potash .........        30 grs.
Pyrocatechin ............        12 ..
In preparing ordinary developers it is not a matter of much importance to drive off the dissolved air from the water by boiling it, but this precaution should not be neglected in the case
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