I developed my first E6 film (4x5 RVP50) yesterday with Kodak chemicals in a Jobo cpp2. I mixed up just what I needed from the 5 liter kit. My question is, would it be better to mix up the whole 5 liter batch, perhaps in half the total amount of water, and then store in glass bottles filled to the rim; or is it better to store the original Kodak solutions with some dustoff gas added? One advantage of the mix it all up method would be that small measuring errors would be minimized. The downside, of course, would be introducing oxygen into the solutions.