de Cezar Popescu | apr. 1, 2012 | Desensitizers, Miscellaneous
Desensitizing is a process whereby the sensitivity of a plate or film is depressed, so that the development can take place by a brighter darkroom illumination. At the present time (1943) the following desensitizers are available: [wptabs type=”accordion”...
de Cezar Popescu | mart. 14, 2012 | Developers, General purpose developers
Positive developer. When a brown-tone developer of this type is used, it does not mean that brown tones will be produced on any paper; not all papers are suitable for brown tones. This developer should be used for those papers which are especially designed to produce...
de Cezar Popescu | mart. 14, 2012 | Developers, General purpose developers
This positive developer is suitable (or all papers, which are intended to give warm-black tones, e.g., chamois contact paper (gas-light), portrait contact and enlarging papers (chloro-bromide). Focal paper developer for warm-black tones, working solution Ingredient...
de Cezar Popescu | mart. 14, 2012 | Developers, General purpose developers
Energetic positive developer giving vigorous results. Producing pure black to blue-black tones on chloride paper, and pure black tones on bromide enlarging paper. Focal paper developer for blue-black tones, working solution Ingredient Quantity Mix chemicals in order....
de Cezar Popescu | mart. 13, 2012 | Developers, General purpose developers
An inexpensive and generally useful positive developer for both printing and enlarging papers. The formula is of good service when the photographer desires one developer to suffice for all purposes, thus avoiding the preparation of a special formula for each type of...
