Over the years I've been collecting old cameras and where they still contain film I've tried to develop it. I've had reasonable success using the cold HC110 process developed by members of the Found Film group. http://foundfilm.livejournal.com/3045.html Until now I have been storing any C-22 materials I've found against the day when I could develop them in color. I think I'm close to being able to do that. Late last year I bought an old Kodak 1 Gallon 2 part C-22 developer kit from Ebay. It consists of two liquid chemicals, Part A and Part B that are both still liquid and of the right approximate volume. First question: How likely is it that this developer will still work? I'm assuming that my biggest problem with be with the CD-3 in the small amber bottle, but the liquid inside looks ok (I haven't broken the seal to examine it further.) John Shriver tried a similar kit back in 2011 but in his case most of the components were dry powder. Does liquid developer make it more or less likely to to still be good? http://www.apug.org/forums/archive/index.php/t-85589.html My plan is to develop the film in low temperature HC110, scan the silver image, then use a Rehal Ferricyanide bleach to "turn" the film back into a form I can develop as C-22. This is the technique used in Kodak's AE-31 technical document. http://www.kodak.com/global/en/consumer/products/pdf/ae31.pdf Question 2: I need to re-expose the film after bleaching but before developing as color. Is it possible to overexpose the film at this point or is the only concern that the film be evenly exposed? Question 3: Would developing in Hc110 or at lower temperature compromise the chances of subsequently getting a color image. Final C-22 processing would be at the correct temperature. I realize that the technique given in AE31 is intended as an "emergency rescue" for people that have accidentally developed color film as B&W and as such they are probably happy with any color image but I was wondering if anyone who has tried it can tell me how badly the technique degrades things vs going straight to color chemistry?