de Cezar Popescu | oct. 26, 2014 | Acid fixers, BW Formula, Compensating developer, Developers, Fixers, formula, Imperial Dry Plate, manufacturers, Two-bath developers
Developers for plates “Pyro-Soda.” Stock Solution. Metabisulphite of Potass. 50 grs. 10 grms. Pyrogallic Acid 1 oz. 83 grms. Bromide of Potassium 60 grs. 13 grms. Water (boiled or distilled) to 12 oz. 1.000 c.c. No. 1. Stock Solution 3 oz. 150 c.c. Water (boiled or...
de Cezar Popescu | apr. 9, 2012 | Compensating developer, Developers, High contrast developers
This is an exceedingly energetic developer intended for plates which have received minimum exposures. On account of the yellowish colour of the image even very weak negatives may have good printing contrast. Working solutions Ingredient Quantity Mix chemicals in...
de Cezar Popescu | apr. 1, 2012 | Compensating developer, Developers
Ilford pyro-soda developer for plates or films. Stock solution Ingredient Quantity Mix chemicals in order. Pyrogallic acid 25 grams Potassium metabisulfite 6 grams Water to make 0.25 liters The potassium metabisulfite should be first dissolved in the water previous to...
de Cezar Popescu | oct. 19, 2011 | Compensating developer, Developers, Tanning developers
Used as a tray developer it compensates for extreme contrast. When used as a tank developer it has pronounced compensating effect for errors of exposure. Extended exposure time is not required. Although it is not a “true” fine-grain developer it produces a fairly fine...
de Cezar Popescu | oct. 19, 2011 | Compensating developer
With this formula, the shadows seem to come up very rapidly during development so that if it is desired to cut down the developing time to give a soft negative this can be done without too great loss of emulsion speed. This developer is said to be suitable for...
de Cezar Popescu | oct. 15, 2011 | Compensating developer
On subjects having violent contrasts where it is necessary to show detail in both highlights and shadows, an acid-amidol developer can be used. IngredientQuantity Sodium bisulphite12grams Amidol10grams Sodium sulphite8grams Water to make 1 liter Mix chemicals in...
