Yes, Adox was only a brand name not a company, Dr C Fotowerke GmbH was the company and bought by DuPont. On closing EFKE bought the machinery and licenses to make some of the films and papers.
Ian
Agfacolor CN17 -- process?
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Yes, Adox was only a brand name not a company, Dr C Fotowerke GmbH was the company and bought by DuPont. On closing EFKE bought the machinery and licenses to make some of the films and papers.
Ian
Hi, I got my 37% formalin few years back from a local pharmacy and I also assumed that I'll be fine for years, but it turned out not to be the case. You see, formaldehyde has a tendency to polymerise and I've noticed mine has formed some precipitate. In theory, some methanol is added as a stabiliser, but I guess it doesn't prevent it forever. Meanwhile, I can get it in 1l quantity, but the local pharmacies seem to stopped stocking it...
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You can buy C-41 stabilizer from Maco:Formalin, eh? Is that even legal? Hm. Well, I've still got time to mull on that while I shoot enough to get into that bag. Maybe the local embalmer might tell me somethingLevity aside, duly noted, thanks!
https://www.macodirect.de/en/chemis...4349/compard-digibase-c-41-g-stabilizer-100ml
From what I read and understood, recent color film can dispense with stabilizer, but for older films, it is important for dye stability.
Apparently, they're trying to revive it.
https://thefotokemikaproject.wordpress.com/
I heard that the decline really came in the 90s—the entire Yugoslavian chemical industry was de facto gutted by the disintegration of the country, since various chemicals used for a single process/purpose were made/refined/etc by plants that were suddenly no longer located in the same country, with mutual animosity between neighbours prevailing over all the other considerations. I've heard so many stories — been living here for around six years now. An ore engineer turned taxi driver described to me in detail how they'd mine ore in Bosnia, send it to Croatia to be refined with the use of some chemical only made in Slovenia, and then smelted and made into metal in Serbia (my account may not be 100% factually correct in terms of the exact process or the exact parts of the former Yugoslavia involved, but you get the idea). The same must have happened to the photo industry. It's a generalisation, of course, but I get the feeling that more of the high-tech research-related stuff was done in Slovenia and Croatia, with Serbia more focused on production and machinery (formerly, Montenegro, too—they had the aluminium plan, the Obod factory that made fridges and washing machines, another one that made tractors still used all over the former Yugoslavia and so on), but I digress, as I so often do.
Yes, Fotokemika was a well-known local brand. Oddly, I still have to see a Yugoslavian camera. They made them just next door in Hungary (the Pajtás, as seen in the picture — a rare beast). Apparently, everybody over here relied on imports from the GDR and the Soviet Union (there's a glut of cameras made in the GDR and the USSR on the local second-hand market, but you'd pay double the US price for an Argus brick in a sketchy condition, for instance).
Oh, here's the "Paitás" — I believe it translates as "mate" from Hungarian. Thinking of getting one just as a curio, really.
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Thanks. You're kinda tempting me to try it with the next batch. Then again. I'm not sure I'm ready to invest the time and the effort, and I haven't tried out the low-temperature C41 process yet.
Well, so far I have to report that I have lost two films attempting to reconstruct the 20 degrees centigrade 50-minute C41 process with CineStill two-bath developer instead of Tetenal as was recommended by folks who'd tried it with results. My two films came out an even transparent brown. At least when I tried to develop one in b/w chemistry, I got actual results (the quality was poor, but you could still see the frames and the shapes on them. CineStill didn't do the trick. I don't deny the possibility I might have done something wrong, but I'm fairly sure I followed the instructions to the letter—only using different chemicals.
At any rate, that Agfa recipe posted above is beginning to look more and more promising. I could probably find a local chemist and custom-order myself a batch. Thanks once again.
At any rate, that Agfa recipe posted above is beginning to look more and more promising. I could probably find a local chemist and custom-order myself a batch. Thanks once again.
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- mohmad khatab
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Agfa process (CNs) that were mentioned in Mr. Dagnan's book, but with some modifications to conform to the (CD3) component instead of the (Tss) component similar to CD1.
I have this from the British Photographic Journal, hope it is of help.
Right. So I've checked the local chemicals and reagents vendor, and the only thing missing from the British Journal Photographic Almanac recipes is Diethyl paraphenilene diamine, ditto diethyl ppd sulfate, ditto all the aniline-based alternatives. Any idea of what a viable substitute might be?
Are you serious about trying this formula?
Yes or no ..
I did tests and based on those tests I came up with some modifications that produced very good results,,
In fact, I am ready to send you that modified version, but I will not publish that version here, because I always get negative comments that are often cynical, and in fact I can no longer tolerate any negative or sarcastic comments.
If you are serious about this then I can help you wholeheartedly. But just be honest about your passion about trying this process?
These are some of the pictures that were treated with that process in Egypt since last winter.
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Oh, absolutely, I'd be delighted! Well, I have a bunch of expired Agfacolor CNS film sitting in the fridge. I was going through the recipes from the British Journal Photographic Almanac, I've already established that I can source everything but the mystery aniline-based component from a local vendor; my knowledge of chemistry is poor, but I have a hunch I could use Metol as a substitute for diethyl paraphenilene diamine/diethyl ppd sulfate (I'd still love someone to confirm that it's a valid substitute). I'd love to take a look at your version. Maybe try out yours, maybe the other one with Metol, maybe both, I have a bunch of film, as I've said… I'm definitely not going to offer any negative commentary; besides, your pictures speak for themselves. How serious am I? Serious enough to buy the chemicals, once I establish which ones I need exactly (I was thinking of using the Ferrania bleach/hardener, for example), and to muck about with mixing them and trying them out. Is that what you'd call a sufficient level of dedication?
You need a dedicated developing agent. The various designations for same agent may be confusing though.
In any case you need a Paraphenylenediamine-derivate, which Metol is not. Some earlier european films even seem to have worked with two different derivates. Of the apt derivate then it seems of lesser importance whether you got the Sulfate or Hydrochloride salt.
In any case you need a Paraphenylenediamine-derivate, which Metol is not. Some earlier european films even seem to have worked with two different derivates. Of the apt derivate then it seems of lesser importance whether you got the Sulfate or Hydrochloride salt.
Okay ,,Oh, absolutely, I'd be delighted! Well, I have a bunch of expired Agfacolor CNS film sitting in the fridge. I was going through the recipes from the British Journal Photographic Almanac, I've already established that I can source everything but the mystery aniline-based component from a local vendor; my knowledge of chemistry is poor, but I have a hunch I could use Metol as a substitute for diethyl paraphenilene diamine/diethyl ppd sulfate (I'd still love someone to confirm that it's a valid substitute). I'd love to take a look at your version. Maybe try out yours, maybe the other one with Metol, maybe both, I have a bunch of film, as I've said… I'm definitely not going to offer any negative commentary; besides, your pictures speak for themselves. How serious am I? Serious enough to buy the chemicals, once I establish which ones I need exactly (I was thinking of using the Ferrania bleach/hardener, for example), and to muck about with mixing them and trying them out. Is that what you'd call a sufficient level of dedication?
First you have to get any color development agent, and the rest of the items can be easily fetched one way or the other.
You can first buy any of these items, (CD4) or (CD3) or (CD2)..
For example,,, A friend managed to get this item from eBay.
Regarding PPD, yes it can be used but it will not give you good results at all. A colleague from Ukraine did tests on it and it didn't work and the results were not convincing at all.
I will send you a private message..
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- mohmad khatab
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- mohmad khatab
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Fantastic @mohmad khatab! What is the shelf-life of these colour developing agents from axelcolor?
Thanks for sharing! A guy from Croatia told two years ago he heard this rumours about reviving Efke. He was not really into film but just heard it so he couldn't tell more. I couldn't find anything online about it.
Axelcolor became known at Apug a few years ago. But still they do not list CD-4 or any developing agent at their webshop. But only at Ebay as you found. Weird.
I did not understand your question.
Are you talking about CD4 while it's powdered as is?
Or do you mean when it is prepared to be a development solution?
If you mean the first meaning, according to my personal experience, it is not limited to a specific time, and this means that the shelf life of this element (as a powder) is very long, and even if any damage occurs with the length of the storage period, this element can be dissolved on its own First with boiled distilled water before mixing it with the rest of the formula. (I do it now.) I own a powder (CD4) that was produced in the late eighties and I learned to do this trick before using it, and thank God it came with really amazing results.
And I had heard the saying of one of the chemists in Egypt saying that any chemical element does not expire until the Day of Resurrection, its efficiency may decrease, but it does not and will not die completely.
- And indeed, I got a bottle of sodium bromide and a package of sodium thiosulfate produced in 1955, I got them almost for free, and I tried those items and it worked and didn't cause any problems, (only sodium thiosulfate was a little dark in color However, this did not affect its efficacy.
I became convinced that this saying is very close to the truth, and I think that he is right in that statement to a large extent.
- If you mean the shelf life of the development solution, then of course there are many variables that contribute to increasing or decreasing the life span of the development solution, and this matter needs a lot of details (if you want me to write you those details, just tell me and I will write you everything I know him according to my previous knowledge in this field.
I wish I could eat veggie biryani rice plus chicken 65 with 200% more chili.
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