<p>Thanks Larry. Any idea why there would be different colors of run off from Velvia(magenta),Portra(veridian green), and old Kodachrome(golden yellow) 120 film? I'm just rinsing unexposed film with water to extract these colors. And this doesn't happen with the 35mm I've tried. No run off of any color. Is there no gelatin top coat on 120 film?</p>