BW Reversal

 

BW Reversal PROCESS (Process R100)*68F RED  PHOTO 2009 PHOTO st

1  Developer Water 122F

500ml

Metol

2g

Sodium sulfite, anhydrous

90g

Hydroquinone

8g

Sodium carbonate, anhydrous Potassium bromide

44.5g 5g

Potassium thiocyanate

2g

Water to make

1000ml

nd 

2  Developer Water 122F

500ml

Metol

2g

Sodium sulfite, anhydrous

90g

Hydroquinone

8g

Sodium carbonate, anhydrous

44.5g

Potassium bromide

5g

Water to make

1000ml

BW Bleach – original formula Water 122F

500ml

Potassium dichromate (T+)

5g

Sulfuric acid (96-98%)

9ml

Water to make

1000ml

BW Bleach – safer formula Water 122F

500ml

Potassium permanganate

2g

Sulfuric acid (96-98%)

12ml

Water to make

1000ml

*This solution fails after 2 hours.  hours. 

Cleaner Water 122F

500ml

Potassium metabisulfite, anhydrous

40g

Water to make

1000ml

 

Fixer – ACID FIXER Water 122F

500ml

Sodium thiosulfate, crystal

200g

Potassium metabisulfite, anhydrous

20g

Water to make

1000ml

Fixer – ALKALINE FIXER    Water 122F

500ml

Sodium thiosulfate, crystal Sodium sulfite, anhydrous

250g 15g

Sodium metaborate (kodalk)

10g

*kodalk –> 6.9g sodium tetraborate + 1.45g sodium hydroxide. Water to make

1000ml

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Processing*68F – development time in minutes

st

1  Developer

5-7

*FomapanR 100 – 6 minutes  minutes  Rinse

2 2   

BW Bleach

5

Rinse

2  2 

Cleaner

2

Rinse

2  2 

Re-expossure

1-2

*16mm 2x 1 minute from each side, film on the reel i is s underwater.  underwater.  is s underwater. *8mm 1x 1 minute from top side, film on the reel i

2nd Developer 

5

Rinse

2  2 

Fixer

6-10

Final rinse

10