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Foma Retro Special Developer
Photochemistry for self-developing and printing photos.
Retro Special Developer 1 liter, a special two-component metol-hydroquinone developer designed for manual processing of Retropan 320 soft negative films, as well as for other types of roll, perforated and sheet negative black and white films, which can be stored in a full bottle for up to 12 months, use within 3-6 months.
In stock: 6 pcs.
Description
Limit of use
1 liter of Retro Special developer working solution is enough for processing 1.3 sq. m of film material is the following number of sheet films: 25 sheets of 8x10 ", 50 sheets of 5x7", 100 sheets of 4x5 "; 36 m of apertured film 35 mm wide or 25 narrow films of 36 frames
Properties
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Preparation of working solution
The contents of the smaller and then the large package must be successively dissolved in 700 ml of warm water (40 ° C). After dissolving all the reagents, add distilled water to 1 liter and cool to room temperature.
Development mode
During the first 30 seconds, the developer is continuously stirred or the tank is continuously inverted, then for the first 10 seconds every minute until the end of the development time. After processing 0.8 m2 of film, it is necessary to increase the development time by 10% for each 0.1 m2
film compared to the previous development time.
Devlopment time (min) at 20 ° C
Retropan 320 4-5min Retropan 320 (EI 640-800) 7-8min
Fomapan100 - 4min
Fomapan 200 - 5min
Fomapan 400 - 6min
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