Re: Eliminating CaCO3 in buffer in "achival" watercolor papers
You're right, my (maybe wrong) point was that: since acetic acid is a milder acid compared to HCl, it would do less harm to the paper, acutely... As far as I can read, acetic acid is the main cause of paper deterioration, so it has to be thoroughly washed out of paper when done. I don't have the dreaded black / brown spots (had them once, but I was using a cheap rusty brush -> it wasn't because of paper...) but maybe it's better to eliminate the possibility altogether. Regards, Loris. 13 Ağustos 2008, Çarşamba, 8:19 pm tarihinde, etienne garbaux yazmış: > ... > I do not think acetic acid will be effective with the tiny metal > flakes that create the dreaded spots, but if you aren't having that > problem (it comes and goes from lot to lot for many papers, and > manufacturers don't seem to care much about it because photo > printmakers are very much minority customers for fine art paper), > that won't matter in your application.