Hi, I know this subject has been addressed several times on apug, but I've read different opinions on the subject so I would like to be sure before operating in the darkroom. I bouth a RA4 RT/LU 4x5L kit here (http://www.ag-photographic.co.uk/kodak-ra4-developer-kit-4x5l-295-p.asp). By reading the description, this kit seems self-sufficient, but as it is called "replenisher", my question is, do I need to add starter to the mix ? Another question, I would like to fraction the mix preparation in order to make only 500ml of mix at a time, and keep the remaining concentrates in their bottles, to improve conservation lenght. Does someone know the exact bottles capacity of A, B and C bottles, and also for blix bottles of the 4x5L kit ? Thanks for your help !