Sean in Atlanta
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- Jul 31, 2007
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- Atlanta, GA
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Hello, I am a student and don't have a lot of experience with mixing my own chemicals because the University only uses D-76 and it is already mixed by the lab techs. But, since we are on Summer break, I've got to process some Ilford 35 and 120 in the bathtub. No problem, I've got everything except I have some HC-110 and am confused about the dilution.
The offical 'Ilford Film Processing Chart' lists options for HC-110A and HC-110B. 'A' says 1+15 and 'B' says 1+31. The time differences between A and B are about double, so I would think that makes sense. But on the bottle of HC-110 it seems to say that Working Solution 'A' is the stock solution plus three parts of water and Working Solution 'B' is stock plus 7 parts of water. So, it seems like the B is already diluted, so if we diluted it in half again, like the Ilford chart suggests, then the time would be more than double, so that is what has set off this alarm. Also, a 1+15 dilution from stock seems awfully high to me. I am suspecting that the 1+15 may be a ratio from the Concentrate, not the Stock Solution of HC-110.
Should I just assume that Ilford is talking about Dilution A and ignore the rest?
Should I do the ratio from the Concentrate?
Should I just guess and ruin all of my film?
Should I start drinking now and process later?
Please advise, many thanks from my bathroom....
--Sean
The offical 'Ilford Film Processing Chart' lists options for HC-110A and HC-110B. 'A' says 1+15 and 'B' says 1+31. The time differences between A and B are about double, so I would think that makes sense. But on the bottle of HC-110 it seems to say that Working Solution 'A' is the stock solution plus three parts of water and Working Solution 'B' is stock plus 7 parts of water. So, it seems like the B is already diluted, so if we diluted it in half again, like the Ilford chart suggests, then the time would be more than double, so that is what has set off this alarm. Also, a 1+15 dilution from stock seems awfully high to me. I am suspecting that the 1+15 may be a ratio from the Concentrate, not the Stock Solution of HC-110.
Should I just assume that Ilford is talking about Dilution A and ignore the rest?
Should I do the ratio from the Concentrate?
Should I just guess and ruin all of my film?
Should I start drinking now and process later?
Please advise, many thanks from my bathroom....
--Sean