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> "old" Promicrol |
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#11
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Now that matches what i have here but suggests 1+4 as a maximum dilution... 1+14 would give a development time of around an hour for fp4 plus
Just for interest, i mixed 1+1 which i worked out to aprrox 14 mins for fp4 plus . I then allowed 50% increase for age. and its badly over developed leading me to think it might not have suffered much through age. Will try without the 50% next ...
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#12
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As a rule of thumb I always start at standard dev with out of date film if it works all well and good. if not you have a starting point from which to increase the time.
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Mitch http://photomi7ch.blogspot.com/ If you eliminate the impossible whatever remains no matter how improbable must be the truth. |
#13
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Quote:
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#14
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Have pieced together the essential bits of an old Promicrol instruction sheet. I must have been mixing up the old and new versions. Normally used as stock or or diluted up to 1+6 - above 1+4 it said grain would increase. There were nomograms for temperature with stock and also one for dilution - 85cc needed per film. Will post a pdf of the bits of instructions in manuals section.
Failed in uploading pdf so link for now to my Google Drive - perhaps someone else can do the honours. https://drive.google.com/open?id=1fq...f-Cm3yxyEfwDej Last edited by DavidMB; 14th April 2018 at 09:32 PM. |
#15
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Got a few pristine copies of the instruction sheet here .....
Just for info, fp4+ at iso 200, with 1+1 dilution about 12 to 15 minutes dependent on contrast required.... Well impressed....
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