"Stable bactericidal effect on gramnegative microorganisms was observed after their 2-hour exposition in the solution of Colloidal Silver at a concentration of 10 ppm. Grampositive capsule-forming microorganisms were less susceptible to the Colloidal Silver solution: their death was observed after the 4-hour exposition in the solution."
So it works on both, but doesn't kill important beneficial bacteria, because it's rapidly absorbed into the bloodstram!? I'm gonna make ozonated CS+ SSKI soon, do you still use that?