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> Kodak vs. Ilford rapid fixers and film washing method |
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#11
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MSDAs only have to list relevant (potentially hazardous) ingredients - the rest will be things like surfactants. More expensive chemicals may have additional contents like better ph buffers and surfactants/softeners etc (or may not!).
Like others I have used assorted fixers over the years (now use Fotospeed FX30) and usually use the ilford method (plus usual extra couple of steps - I can't believe nobody does that ). |
#12
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Hi Bob,
Yes, Ilford most certainly left out a few ingredients of their fixer recipe...the thiosulfate, for example . There is no requirement to list it if it isn't considered a hazardous substance, which I suppose applies here. I'm curious about this statement though... Quote:
Just interested to know what you do?
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Regards, Svend |
#13
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Yes, I can't believe anyone does it exactly as Ilford recommend - that requires a leap of faith even the most devout will have trouble making . I'm sure they are correct, it just seems reeeeealy short, intuitively.
I just add a couple of extra 20 inversion steps - the last one with deionised water. I also use the Ilford method for washing fibre paper: fix 1 minute in film-strength fixer, 5 min wash, 10 min wash-aid, 5 min wash (but again, I actually give > 5 mins final wash as I just leave it in the washer until I need the slot for another print). You need to test your fixer before use if you reuse your fixer between sessions (which I do) to make 100% sure it is not starting to die. Last edited by Bob; 9th June 2019 at 07:22 PM. |
#14
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Quote:
And yes, I'm sure Ilford tested the heck out of this before publishing it. I'm pretty sure I followed their method for about a year or so, and looking back at my rolls I see nothing funky going on that would indicate bad washing. BTW, after all the Kodak vs. Ilford fixer chat I ended up buying Ilford again. Once I calculated out price per litre of working solution, Ilford ended up slightly less costly. And I didn't have to dump that little bottle of unused Kodak hardener that comes with it. We have enough waste in our society to deal with, without me adding to it for something that I hadn't even used, however small it may be.
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Regards, Svend |
#15
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Quote:
So as a rational being armed with all the known facts what do I do now? Well, with slight variations I do what you and Barry do. Mike |
#16
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Well Mike, I can't always be given credit for being rational . I should clarify my previous statement - when I got back into photography about five years ago (all film, BTW, never digital), I started washing films using Ilford's method, and I followed it to the letter for a year. Then after a year or so I started adding the little "extra steps" that Bob and I were referring to. See? Not exactly rational, eh? But those first films are still looking just as good as they were when they were developed.
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Regards, Svend |
#17
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I'll keep you all informed of the progress of my Ilford-washed and now 16 year old films - just in case a problem arises.
If there are any friends here who have Ilford-washed film that are older than 16 years and still OK then drop a line to that effect. When there are others on another site using 30 litres of water per FB print we may need to adopt water saving measures Mike |
#18
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Quote:
__________________
Regards, Svend |
#19
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I have always followed the Ilford washing principle for both my films and FB prints and still do with only slight changes to the following.
So, following instructions from various books of the day, I used to quickly rinse my FB prints after fixing, which was followed by a 10 minute or so soak in a washing soda solution in a tray (= about one tablespoon to a litre of water) and then left to soak for about 20 - 30 minutes, in a couple of inches of water in the bath; agitating and changing this water once or twice before being hung up to dry and then flattened in one of the heated driers with a cloth on it. My oldest prints, being made in the 70's when I was a teenager, still look absolutely fine, with no stains. The exposures are a bit off though, as I followed the sunny f16 rule and my printing wasn't up to much then. As for my negatives, I don't know what my Mum did with all of them when I moved out, but I think they've gone to the darkroom in the sky. Shame, as I would loved to have had a go at reprinting some of them and there would have been a good record of the time, as I took a lot of family pictures. Terry S |
#20
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Washing soda? As in Arm and Hammer stuff? For print washing, instead of hypo clearing agent? Interesting! Never heard of that. Where can I learn more about this? Seems like a great idea.
__________________
Regards, Svend |
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