RE: converting anhydrous to mono...?
Loris and all, > I'd just add potassium carbonate to the oxalic acid solution (mixed at right concentration beforehand) until it doesn't fizz anymore, then add minuscule amounts of oxalic acid (patiently) checking the pH of the solution every time, until you reach the desired pH level. (pH 6?) > That's more or less what I do. It works fine and is inexpensive. Don