The American annual of photography . ON A MOUNTAIN ROAD. EDGAR A. COHEN. ^Z7. A WORD FOR DIAMIDOPHENOL By EDWIN LOKER HE above stumper in the way of a name is bet-ter known by the trade as Amidol, Dianol, etc.,and in caustic solution as Rodinal. Thischemical is to my mind one of the most satis-factory all-round developers, especially in acidsolution, that I have ever come across, both in working andcheapness, especially for the amateur, and I can confidentlyrecommend the following: Water 20 oz Sodium Sulphite ij/^ oz. Sodium Bisulphite 10 dr. Bromide Potassium JO gi- Bottle the above in 3 or 6
The American annual of photography . ON A MOUNTAIN ROAD. EDGAR A. COHEN. ^Z7. A WORD FOR DIAMIDOPHENOL By EDWIN LOKER HE above stumper in the way of a name is bet-ter known by the trade as Amidol, Dianol, etc.,and in caustic solution as Rodinal. Thischemical is to my mind one of the most satis-factory all-round developers, especially in acidsolution, that I have ever come across, both in working andcheapness, especially for the amateur, and I can confidentlyrecommend the following: Water 20 oz Sodium Sulphite ij/^ oz. Sodium Bisulphite 10 dr. Bromide Potassium JO gi- Bottle the above in 3 or 6 oz. lots, well corked and it willkeep several months, some say indefinitely. For perfectlyfresh paper I use no bromide, as the blacks seem better. Inworking as seldom more than two or three prints 11 x 14 aremade at a time, I take 2 oz. stock solution, add 6 gr. Amidol(a mustard spoon hoMs it). Time of development is abouttwo minutes. The secret of working with so small a quantity successfullylies in absolutely correct exposure, nothing else will do. De-velopment can then
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1919
