I bought my last batch of Ascorbic acid (vit C) off ebay, believe it or not. Very cheap. From a chemical wholesaler in Germany, it is 100% pure. I've used quite a bit already and I've not had to compensate one bit.
If you have problems getting hold of Potassium Bromide (KBr) for your faster films, try out iodide/iodine enriched salt. Though not a topic in the Caffenol Cookbook, several of the authors have tried it out and posted their results on flickr.
Sodium carbonate, you can get from swimming pool suppliers, almost all "PH plus" are Sodium carbonate.
1 1/2 years ago I posted on my blog where to buy affordable Vit-C. This ebay-seller is very friendly and he assured me that he ships worldwide. The seller is still active. Reasonable price and shipping: http://caffenol.blogspot.de/2011/06/...de-seller.html
Vit-C: many supermarkets in Germany, every pharmacy, 2 - 3 Eur/100g
Washing soda waterfree (brand: Heitmann) I get at the local supermarket in Germany, 1 Eur/500g. Also at the "DM-Markt". In France there is sold a "soude cristeaux" containing 50 % water in supermarkets.
Instant coffee: every Aldi, Lidl, supermarket in Germany. Buy the cheapest. Here 3.60 Eur/200g
Best - Reinhold
I just wanted to know if anybody has any info for plus-x 125 iso.I read somewhere that fp4 is around 12 min @ 20c . I have all the stuff i need,I had to make my own sodium carb from baking soda.
What i would like to know is the time for fp4 a good starting place for the plus-x being iso 125. I got 60 rolls dated 2006, It works fine in rodinal but I want to try coffee.
Any info would be great. thanks al.b