Hi, I just start to make some tests with Diafine, and i have to say that i am quite happy with it. On the technical file, they say it's an extremely stable formula and unusually long working life. So, i have already developp 4 rolls (135) (with a 1liter can of A & B), Diafine A already started to get colored. So, can you please tell me if: - there is a limited number of rolls that i can developp without making any replenishment - what is the maximum time of storage in your opinion ? Many thanks in advance.