tag:blogger.com,1999:blog-1038963912631739676.post5159801228388264510..comments2024-02-14T19:08:47.362+01:00Comments on Caffenol: Soda: myth and truthimagesfrugaleshttp://www.blogger.com/profile/16601551090153453277noreply@blogger.comBlogger27125tag:blogger.com,1999:blog-1038963912631739676.post-1098188016049952342016-01-01T23:55:34.318+01:002016-01-01T23:55:34.318+01:00Hi Mr. Unknown, I never heard of that phenomenon, ...Hi Mr. Unknown, I never heard of that phenomenon, sorry.imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-59195503162828800222015-10-21T19:55:36.256+02:002015-10-21T19:55:36.256+02:00I've just purchased some 'soda crystals...I've just purchased some 'soda crystals' and have put 50grams in the oven at 150 degrees Celsius. After ten minutes I took a look and the powder had liquified. Does this mean I have a decahydrate? It still weighs 50grams, but I wasn't expecting it to turn to liquid!Unknownhttps://www.blogger.com/profile/07028220502548921011noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-27188299464817458332014-12-30T12:06:12.136+01:002014-12-30T12:06:12.136+01:00Hi Ralph, there's no need to post results here...Hi Ralph, there's no need to post results here, this is not a forum or discussion board, but thank you very much for your interest. Feel free to post your images on the caffenol groups at flickr or ipernity or .....<br /><br />Your washing soda is quite expensive compared with the one I can get here (500g, 1 Eur in the supermarket), but it depends of course on your local situation. Arm & Hammer e.g. is a good soda (8 % water) available in supermarkets in the USA. And obviously yours is 100% waterfree. imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-42953742141606766802014-12-29T20:26:36.719+01:002014-12-29T20:26:36.719+01:00I bought this from Amazon. http://www.amazon.com/g...I bought this from Amazon. http://www.amazon.com/gp/product/B00B08IUAS/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1<br /><br />Free shipping.<br />I baked 10g @ 275F (135C) for one hour. Result was 10g using an accurate gram scale.<br />When the C powder shows up, I can post results.Ralph Lundvallnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-62391103687783898882014-10-21T09:41:12.844+02:002014-10-21T09:41:12.844+02:00I'll start again with the soda, I've had s...I'll start again with the soda, I've had some good results with Fomapan 100 and 400, but disappointing with FP4 (admittedly dated 1999). Then I had a series of outdated film Technical Pan, Fuji c200, Ilford XP come out totally blank (not even any edge marking) or so dense it will not scan.alancemnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-66282941787174360742014-10-17T23:03:09.614+02:002014-10-17T23:03:09.614+02:00alancem said: I wanted to be sure of my soda compo...alancem said: I wanted to be sure of my soda composition, various packs say decahydrate, some minimum 30%, some 40%<br /><br />Hm, minmum 30 % means it it not pure washing soda, something else is added. Maybe a bleaching agent or a filler or whatever. These mixes are not suitable at all. Be sure to get pure washing soda, hydrate or not, but nothing else. Then you can check for water content. You don't need to dry a whole kilogramm for hours, do it with 10 gramms and weigh before and after and you know wht you have in hands. The dried soda must be a white powder. If it's not a white powder, it's wrong. After that you can recalculate the needed amount for your hydrate. Be sure to do the math right.<br /><br />The Konica IR is a color film? If so, I wouldn't sacrifice it in a bw-developer. That's like drinking a vintage malt whisky on the rocks. imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-26299350947423818512014-10-16T20:59:40.061+02:002014-10-16T20:59:40.061+02:00Hi - your blog and the cookbook have bought fun ba...Hi - your blog and the cookbook have bought fun back to photography!<br />I am playing with old cameras and different films with varying results. I firmly subscribe to the need for metered exposure and carefully weighed chemicals, but have a conundrum. after failure trying to develop Fuji C200 I wanted to be sure of my soda composition, various packs say decahydrate, some minimum 30%, some 40%. I'm waiting for some pH paper to arrive, but decided to dry an fresh pack. after 6 hours in the oven at 140 degrees C, 1 kilo weighed 1.1 kilo so out of frustration I've put it in a pan on the stove top and heated it to 160 degrees for 30 minutes. It still weighs 1.1 kilos. Help<br /><br />As an aside, has anyone tried developing Konica IR film? I have three rolls just tempting me....alancemnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-62448832250108001952014-07-19T23:11:52.627+02:002014-07-19T23:11:52.627+02:00Hello Donato,
please excuse the delay and thank y...Hello Donato,<br /><br />please excuse the delay and thank you for your kind words. <br /><br />I don't speak italian, but if it's a white powder and no crystals then it's the anhydrous/waterfree soda. The formula Na2CO3 is OK.<br /><br />Happy developing - Reinholdimagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-18894541948452193652014-07-12T21:32:28.880+02:002014-07-12T21:32:28.880+02:00Hi...very, very nice blog...!
I'm just goin...Hi...very, very nice blog...!<br />I'm just goin' back to film photography and this seems a very interesting way to develop films.<br />I've just a (maybe silly) question: Here (in Italy) we have Soda Solvay, that claims to be >99% pure soda (Na2CO3) Is this the right recipe?<br /><br />http://www.sodasolvay.it/it/product/index.tcm<br /><br />Thanks,<br />DonatoAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-90361581136981090742012-04-13T23:38:45.583+02:002012-04-13T23:38:45.583+02:00Hi Reinhold,
Here in France, we don't get the...Hi Reinhold,<br /><br />Here in France, we don't get the anhydrous washing soda easily. I only found the “Cristaux de Soude” from the “Saint-Marc” brand at the supermarket (the brand is widely sold here). <br /><br />It isn’t a white powder, but hydrated crystals (I got a kg for a couple of euros).<br /><br />I tried to get rid of the water by heating up 100.0g of these crystals to 150°C in the oven. A lot of water came out and I needed 90 minutes heating before it was totally dry. I got 35.3g of very thin, white and dry powder from it. <i>100/35.3 = 2,83</i>. Assuming I lost a little bit from it when I crushed it (the powder was one solid piece), it is clearly near to the 2,7x factor you told of.<br /><br />I think that the “Saint-Marc” "Cristaux de Soude" are definitively decahydrate.<br /><br />Cheers.Matthieuhttps://www.blogger.com/profile/09887357628165310888noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-32843545106520852952012-04-09T07:15:11.977+02:002012-04-09T07:15:11.977+02:00Thank you Oliver for the info. You got almost pure...Thank you Oliver for the info. You got almost pure decahydrate.<br /><br />The soda quality is the winner hands down concerning any Caffenol related problems.imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-19088050626711445142012-03-31T18:17:00.308+02:002012-03-31T18:17:00.308+02:00Here in Switzerland I found a soda from the compan...Here in Switzerland I found a soda from the company Van Baerle AG. Its sodium carbonate content is 38% (starting from 220 g "Fein Kristal Soda" I heated up and ended with 83 g of fine white powder). So if someone uses this brand, one will have to take times 2.6 the amount of soda crystals; which is 143 g for the Caffenol C M/H recipes.<br />No wonder my first attempt was totally undeveloped..Olivernoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-5638073170089932962011-12-23T09:08:50.355+01:002011-12-23T09:08:50.355+01:00Hi Cory, no, you should treat it as you tested it:...Hi Cory, no, you should treat it as you tested it: 89 % soda. That's why you did the test ;-)imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-14443953173218945912011-12-21T08:34:48.178+01:002011-12-21T08:34:48.178+01:00Hello. I just put 100g of washing soda in the oven...Hello. I just put 100g of washing soda in the oven at 180 °C and when it came out it was 89g. So it's kind of a considerable weight difference, but it's not the 20% you mentioned. Should I still treat it as a monohydrate?<br /><br />Thanks!<br />Coryhomeissnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-58782388234765810942011-06-09T17:47:41.806+02:002011-06-09T17:47:41.806+02:00Hi Anonymous (best poster ever :-D ),
converting ...Hi Anonymous (best poster ever :-D ),<br /><br />converting baking soda by heating is a proven method like drying hydrated soda.<br /><br />I alway recommend first diluting the soda, then adding the Vit-C, again CO2 bubbles appear. Let the bubbles clear (stir) and only then add the coffee. Might be important, at least you get less foam when adding the coffee.imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-3788876991702794062011-06-09T02:56:09.520+02:002011-06-09T02:56:09.520+02:00I have had good luck making Na2CO3 out of baking s...I have had good luck making Na2CO3 out of baking soda (generic/private label brand, USA) to get the quantities right. Last batch was 100g NaHCO3 heated on the stovetop until bubbling stopped, which yielded 62g Na2CO3. I added 620ml water to make a 10% solution which seems to work pretty well, I add it to the coffee/vitamin C mix right before development.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-44539259964692281702010-08-24T04:36:14.404+02:002010-08-24T04:36:14.404+02:00Hi Copen-Z
it turned out that the "better&qu...Hi Copen-Z<br /><br />it turned out that the "better" coffes aren't so bad ;-) Maybe you should increase the amount for 10 to 30 % because they may have some less caffeic acid, but should still work. A friend uses Nescafe Gold without changes in C-C-M and it works. Here these better brands are about 2-3 times more expensive :-(<br /><br />Using less acidic "better" coffee may result in an increased pH that maybe is compensating. But don't worry about it too much, just do it.<br /><br />Once you are satisfied with the results, always use the same brand, so you get used to it.<br /><br />Best - Reinholdimagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-44405270459809373402010-08-24T03:24:48.197+02:002010-08-24T03:24:48.197+02:00"Better coffees like Nescafe, or labeled &quo..."Better coffees like Nescafe, or labeled "mild", "100% arabica", "gold" etc may be not suitable."<br /><br />are there any special ingredients one should look up for on a can of coffee? because besides nescafe and jacobs, there are no other instant coffee lables available here in my country - other than the ones that smell like baked soya. :)<br />cheersCopen-Zhttps://www.blogger.com/profile/15609777817181472255noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-36777782499714598632010-05-22T03:13:53.841+02:002010-05-22T03:13:53.841+02:00Thank you Magnus,
but these are the 2 methods I w...Thank you Magnus,<br /><br />but these are the 2 methods I would estimate to be most unconveniant and unsafe methods and would prefer to use any other regular developer. F.e. I read several reports that the heating of baking soda lead to blank negatives.<br /><br />If you are absolutely unable to find washing soda, go to a pool supplier shop and buy pH-Up. It's sodium cabonate. Determine if it is anhydrous or a hydrate and be fine.imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-5207170222169993632010-05-22T00:19:01.722+02:002010-05-22T00:19:01.722+02:00About the carbonate. Another source is baking soda...About the carbonate. Another source is baking soda (sodium bicarbonate) and lye (sodium hydroxide or caustic soda). Mix one weight part of lye with 2,1 weight parts of baking soda in water, that is exactly the same as using 3,1 weight parts of monohydrated sodium carbonate. The chemical reaction is: NaOH (lye) + CHNaO3 (baking soda) = Na2CO3 + H2O (sodium carbonate + water)<br /><br />So, when your recipe calls for 54g waterfree sodium carbonate that corresponds to 64,8g monohydrated (1,2x), to be mixed in water, we could just as well use 21g lye and 44g baking soda.<br /><br />Sodium bicarbonate as baking soda can be found in any supermarket and lye is sold as sewage cleaning or as a strong alkaline cleaning agent to be used before painting things like old furniture. (Do not get strong mixtures of caustic soda on your skin!)<br /><br />Yet another, slightly expensive way to get sodium carbonate is to fry baking soda in a tough stainless pan, really fry on intense heat. It will steam off carbon dioxide and when all gases are gone you will have sodium carbonate left in the pan, but the pan wont look nice, not the surroundings either if there is no lid on the pan.<br /><br />-MagnusAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-24900491567987375482010-04-27T14:29:39.226+02:002010-04-27T14:29:39.226+02:00Is there any brand or commercial name in Germany ?...Is there any brand or commercial name in Germany ? <br />I'm trying to localize the components of the recipe and I want to be sure I find the right ones and I think that I will surely find them here in Holland too. By chance any brand they sell in Lidl / Aldi ?runlevel0https://www.blogger.com/profile/07622148010097407559noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-4341800417801535762010-03-19T00:19:04.058+01:002010-03-19T00:19:04.058+01:00Thanks you so muchThanks you so muchkylehttps://www.blogger.com/profile/14870809164001465402noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-32140983293107898002010-03-08T22:40:03.997+01:002010-03-08T22:40:03.997+01:00Hello Mike, glad to see you here. I'm very cou...Hello Mike, glad to see you here. I'm very courious about your research and hope to see some pics and words from you soon here.<br /><br />Cheers - Reinholdimagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-59300382525124615752010-03-08T11:07:52.827+01:002010-03-08T11:07:52.827+01:00This is by far the most useful single piece of inf...This is by far the most useful single piece of information about Caffenol so far Reinhold! It is only possible to buy the "Cristaux" sort in France, so I am off to measure the water content, toute'suite! Many Thanks,<br />MikeMikeinlagardettehttps://www.blogger.com/profile/03315609156142666643noreply@blogger.comtag:blogger.com,1999:blog-1038963912631739676.post-83528469781572017842010-03-08T01:42:59.964+01:002010-03-08T01:42:59.964+01:00Thank you both for the encouragement and useful ad...Thank you both for the encouragement and useful additional info. Soada should be stored in an airtight and well closed box and it will be stable regardless of the kind.imagesfrugaleshttps://www.blogger.com/profile/16601551090153453277noreply@blogger.com