Film processing technology

 
 
 
The detailed information on technology of processing of a film, recipes of processing solutions, technology of preparation of these solutions you can receive from firms of the manufacturers of a film : Svema, Kodak, Fuji,  Ilford,  Agfa and others..

 
As an example, on this server, introduced  the technology of processing  of a B&W reversal OCH-L-200 200 ASA SVEMA film  in details.

You can process on this technology and these solutions and of a reversal film and other firms, but with some updating of time of processing in solutions.

In any case the exact times of processing in solutions is selected by an experimental way.

Changing time of processing in solutions, saturation (activity) and temperature of processing solutions, you can achieve the special expressive means of your film. You can receive the image with very soft or especially contrast scale. Thus you can transfer the special atmosphere, mood of your film or separate scenes.

Changing time of processing in solutions, saturation (activity) and temperature of processing solutions, you can to increase or to reduce film's speed.

Using subtleties of process of processing of a film you open before yourselves unimaginable open space for experiments and expression of the plans..
 
The  technology of processing of a Svema B&W reversal OCH-L-200 200 ASA film.
  
  
 Stages of Processing   Duration
(minutes)
 Temperature of Solution
 1  First Black and White development   Stated on the film package.
( 4-12 minutes ) 
 20 ± 0.3 ºC
 2  Washing  
 10 
 15± 5.0 ºC
 3  Bleaching  
 7 
 19± 1.0 ºC
 4  Washing 
 5 
 15± 5.0 ºC
 5  Clearing bath 
 7 
 19± 1.0 ºC
 6 Washing 
 
 5 
 15± 5.0 ºC
 7

 Re-exposure 8600 lux/sec

The exposure is to be made by means of two 100W lamps at the distance of 1 meters from emulsion layer. 

1- 4   
 8  Second Black and White development 
 6 
 19± 1.0 ºC
 9  Washing 
 1 
 15± 5.0 ºC
 10   Fixing 
 5 
 17± 2.0 ºC
 11  Washing 
 20 
 15± 5.0 ºC
 12  Drying    
   no more than 35.0 ºC
 
The recipes of processing solutions.
First B&W developing solution  

1. Metol 2 g
2. Hydroquinone 14 g
3. Sodium sulfitum waterless 25 g
4. Potassium bromide 2 g
5. Potassium carbon 40 g
6. Natrium sulphate waterless 10g
7. Natrium diabrotic (caustic soda) 2g
8. Potassium thiocyanate 2.5 g
9. Watter  up to 1 L  
 
 
Bleaching solution
 
1. Potassium bichromate  6g
2. Sulfuric acid 1,84 5 ml
3. Water  up to 1L
 
Clearing bath solution
 
1. Sodium sulfitum waterless 50 gr
2. Water up to 1 L 
 
Second B&W developer.
 
1. Metol 5 g
2. Hydroquinone  6g
3. Sodium sulfitum waterless 40g
4. Potassium carbon  40g
5. Potassium bromide 2 g
6. Water  up to 1 L
 
Fixer.
 
1. Sodium thiosulfatum   200 g
2. metabisulfite of potassium   40 g
3. Water up to 1L
 
The  technology of processing of a Svema B&W negative A2-SH 320 ASA film.
   Stages of Processing

 Duration   (minutes)

 Temperature of Solution
 1  Development

 Stated on the film package.

( 6-14 minutes )

 20 ± 0.3 ºC
 2  Washing  10 
 15± 5.0 ºC
 3   Fixing 
 10 
 17± 2.0 ºC
 4  Washing 
 15 
 15± 5.0 ºC
 5  Drying    
   no more than 35.0 ºC
 
B&W developing solution  

1. Metol 1.6 g
2. Sodium sulfitum waterless 100 g
3. Hydroquinone 2 g
4. Natrium tetraborate 2 g
5. Potassium bromide 0.4 g
6. Watter  up to 1 L
 
 To repeat operations according to technology of processing of a film.
 
 
 
 
 
 To establish necessary temperature of a solution.
 
 
 
-  To fill a solution.
- to process film
- rotate spirale handle on processing
 
 
 
 
If you want to reach high stabilization of temperature at process of processing of a film, you can use large capacity with water of necessary temperature. The high stability of temperature of processing solutions is very important at processing color films.
 
 
 
 
 
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