Back to the mundane,

In order to avoid messing around with .05 g Phenidone I thought I would double the recipe to use .1 g. I have a triple beam balance that will measure 1/10th g. So my question now is does the 2000 mL concentrate get diluted to a working strength at time of use, and if so, what do you feel is a proper mixture/ratio might be? My process for developing 4x5 inch Delta 100 in Kodaks' Xtol is using a Jobo with constant & continuous reversing rotation and 4 Oz stock solution plus 4 Oz water (8 Oz total solution) for 1 to 4 negatives is all that is required and recommended.