Many Pt/Pl developer formulas call for a supersaturated solution of Potassium Oxalate - i.e., 350 grams per liter. The solubility of PO is 30 grams/100 grams of water (=300 grams/L). What benefit is there in supersaturating the developer when the excess will probably precipitate out of solution anyway? As a side note the B&S label says to dissolve 250 grams into 1 Liter.
Thomas
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