Thanks!The standard home brew DIY 2 part for Sodium Carbonate is 2 1/4 cups on a volume basis. Off hand, I don't know the mass conversion if you are weighing it.
That’s why I wanted the magic number from @coralreeferNote that if you mix to a lower concentration, it mixes easier and is less likely to precipitate.
And since we add a ton of RODI anyway, all that means is a larger reservoir and program doser differently.
Will do that now that I have a perm container for it.I write the ratio directly on the container in sharpie so I don’t have to remember it or search for it.