Ah yes, home made sodium citrate!
Just a thought... you may be unsatisfied with the results of the off the shelf store bought sodium citrate. Be prepared to do some fiddling to match what you got with your home brew.
I made my own sodium acetate kallitype developer by reacting 5% distilled vinegar with baking soda. Then decided I could better spend my time taking photographs and bought sodium acetate from a supplier. Big difference in image tone. Might brew a gallon of my own again soon.