What would make more sense if you do not shoot much B/W: Collecting exposed rolls of film, putting them in the fridge until you have enough to exhaust 1l of Perceptol and then developing them all together with freshly mixed developer or developing them right after exposure but with aging developer? I dont shoot much B/W at the moment and usually 1l Perceptol stock lasts for 4-6 films (each film individually, I do not re-use the developer). I do not intend to shoot more than 1-2 rolls of film per month right now. Which solution will be better? Im using FP4+ and HP5+ mostly, also looking forward to shoot some PanF+ which has a very bad latent image stability from what Ive read.