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Filmotec B&W Reversal Processing

First Developer Orwo 829    
Part A    
Water @ 35°C 750 ml  
Sodium Sulphite (anh) 25 g  
Phenidone 0.2 g  
Hydroquinone 10 g  
Sodium Carbonate (anh) 20 g  
Potassium Bromide 6 g  
Potassium Thiocyanate 5 g  
     
Part B    
Water @20°C 125 ml  
Sodium Hydroxide 5 g  
after cooling add Part A to Part B then    
Water to 1 litre  
     
Bleach Bath Orwo 833    
Water 750ml
   
Potassium Dichromate 10 g  
Sulphuric acid (conc) - see note 15 ml ADD THE SULPHURIC ACID DROP BY DROP TO THE 750ml WITH CARE.
Water to 1 litre  
     
Clearing Bath Orwo 83    

Sodium Sulp5hite (anhyd)

90 g  
Water to 1 litre  
     
Second Developer Orwo 842    
Part A    
Water @ 35°C 750 ml  
Sodium Sulphite (anh) 25 g  
Phenidone 0.2 g  
Hydroquinone 10g  
Sodium Carbonate (anh) 20 g  
Potassium Bromide 6 g  
     
Part B    
Water @20°C 125 ml  
Sodium Hydroxide 5 g  
after cooling add Part A to Part B then    
Water to 1 litre  
     
Fixer Orwo 300    
Sodium Thiosulphate (pentahydrate) 200 g  
Potassium Metabisulphite 20 g  
WAter to 1 litre  
     
     
First Developer 20°C 5:15 mins +/- ½°  
Wash 2 mins  
Reversal Bath 2 minutes  
Wash 1 minute running water  
Clearing Bath 1:30 minutes  
Re-exposure

Expose to 8.000 lux

 
Second Development 20°C 2:40 mins +/- ½°  
Wash 30 scs running water  
Fixer 1:30 mins  
Wash 3 mins running water  
     
Filmotec 2008