First Developer Orwo 829 |
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Part A |
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Water @ 35°C |
750 ml |
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Sodium Sulphite (anh) |
25 g |
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Phenidone |
0.2 g |
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Hydroquinone |
10 g |
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Sodium Carbonate (anh) |
20 g |
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Potassium Bromide |
6 g |
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Potassium Thiocyanate |
5 g |
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Part B |
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Water @20°C |
125 ml |
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Sodium Hydroxide |
5 g |
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after cooling add Part A to Part B then |
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Water to |
1 litre |
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Bleach Bath Orwo 833 |
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Water 750ml |
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Potassium Dichromate |
10 g |
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Sulphuric acid (conc) - see note |
15 ml |
ADD THE SULPHURIC ACID DROP BY DROP TO THE 750ml WITH CARE. |
Water to |
1 litre |
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Clearing Bath Orwo 83 |
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Sodium Sulp5hite (anhyd) |
90 g |
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Water to |
1 litre |
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Second Developer Orwo 842 |
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Part A |
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Water @ 35°C |
750 ml |
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Sodium Sulphite (anh) |
25 g |
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Phenidone |
0.2 g |
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Hydroquinone |
10g |
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Sodium Carbonate (anh) |
20 g |
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Potassium Bromide |
6 g |
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Part B |
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Water @20°C |
125 ml |
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Sodium Hydroxide |
5 g |
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after cooling add Part A to Part B then |
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Water to |
1 litre |
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Fixer Orwo 300 |
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Sodium Thiosulphate (pentahydrate) |
200 g |
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Potassium Metabisulphite |
20 g |
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WAter to |
1 litre |
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First Developer |
20°C 5:15 mins +/- ½° |
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Wash |
2 mins |
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Reversal Bath |
2 minutes |
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Wash |
1 minute running water |
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Clearing Bath |
1:30 minutes |
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Re-exposure |
Expose to 8.000 lux |
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Second Development |
20°C 2:40 mins +/- ½° |
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Wash |
30 scs running water |
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Fixer |
1:30 mins |
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Wash |
3 mins running water |
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Filmotec 2008 |
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