Hello. I just recently joined phototrio, and am really impressed with all of the great information that everyone has provided. After doing B&W development for a while I am looking to start C-41 development. I will mainly be developing 120 film and some 4x5. I will only be developing a few sheets of 4x5 and a few 120 rolls a year using a tank and reel. I am looking to purchase chemicals that will be economical and have a longer shelf life if possible. I have reviewed the great information on the following threads: https://www.photrio.com/forum/threads/list-of-color-chemicals-and-where-to-get-them.79069/ https://www.photrio.com/forum/threads/has-anyone-used-this-kodak-c41-sm-development-kit.97134/ https://www.photrio.com/forum/threa...r-starter-developer-replennisher-help.136610/ However a lot of the information now seems to be out of date as I cannot find some of the chemicals mentioned. It looks like the standard chemicals needed for C-41 processing are: 1) developer/replenisher, 2) developer starter, 3) bleach, and 4) fixer. Here are some options I am considering, and was hoping for some input. 1) Developer/Replenisher: 1.1) Kodak Flexicolor Fixer/Developer/Replenisher (Cat #: 3667805). I don't understand why it says fixer and developer 1.2) Kodak Flexicolor LU Developer Replenisher (Cat #: 8231672). 2) Developer Starter 2.1) Flexicolor Developer Starter LORR (cat #: 6601074) . This is the only starter I can find. The non LORR developer starter seems to be listed everywhere as no longer manufactured. 3) Bleach 3.1) Potassium Ferricyanide. This seems to be the cheapest option and has a long shelf life. From what I found, in order to make a working solution it should be mixed anywhere from 50 - 80 grams per liter. Some recipes I see call for Potassium Bromide as well. 3.2)Kodak Bleach III - I see this recommended a lot, but it appears that you need 3 things to make this: Kodak Flexicolor Bleach III Replenisher cat#: 6600258, which includes parts A and B, and is a starter needed? (found: Kodak Bleach Starter: Cat #: 6601082) 3.3) Kodak Flexicolor RA Bleach Replenisher (Cat #: 8255549). Like above, is a starter needed, and if so is the Kodak Bleach Starter: Cat #: 6601082 ok?Flexicolor Bleach (I think you need the starter: Kodak Flexicolor Bleach Starter: cat #:6601082, and the Kodak Flexicolor Bleach Replenisher: cat #: 8255549 - however this does say C-41RA) 4) Fixer 4.1) Kodak Flexicolor Fixer/Replenisher (cat #: 6600027). I cannot find a starter for this, is a starter needed? Do I have the correct combinations listed for the options? Will the one developer/starter I found work for both the developer/replenishers I listed? Are there some other options that may be better that I am not considering? I saw Flexicolor SM listed on some threads, but could not find the chemicals for sale, with the exception of the F1 and F2 kits, unless I am confused and that is the only way the SM chemicals can be purchased. What are the advantages over a LU/LORR verses when it comes to shelf life of the concentrates and occasional use throughout the year. I realize that LU is supposed be for low utilization, but is also for developing in machines and I don't know how that translates to storage of the concentrates and processing using reels and tanks. I really appreciate your help with this!