[alt-photo] Re: Question for Platinum/Palladium printers

[etienne garbaux]

Clay wrote:

>I agree. Disodium EDTA is the acidic version of EDTA. Tetrasodium is 
>basic and and is just not a good idea all by itself.

I have not tested it, but I doubt the acidity of Disodium EDTA is 
sufficient to solubilize stubborn iron complexes.  I think you need a 
"mineral" acid (i.e., not organic) for that -- for example, acetic 
and citric acids are not enough (in my testing citric acid gave a 
valiant effort, and perhaps if you let prints soak for an hour it 
would work reliably, but I do not consider it trustworthy for this duty).

Best regards,

etienne