Quote Originally Posted by Ole
Would it be safer/easier to produce the Ferri oxalate in solution? There is no real need to make a dry powder through a particularly nasty process, when the end result is to be dissolved? All it would take is a way to either make Ferrioxalate solution of a known concentration, or a good way of measuring the concentration.

Just a thought...
From what I have read, the process of making the powder is an acid/base reaction or a salt/acid precipitation, either way even in solution some acid is present that has be washed off to be able to use the solution. I dont know if neutralizing would put the ferric oxalate back in solution, but either way I think there would be some ingredients left that would make printing difficult. I dont know, but for me, buying it is far easier than dealing with all the hassle.....