By measuring the ratio of Colloidal Silver compared to the amount of "bacteria-rich" water, Dr. Gibbs was able to chart the efficacy of what he classified as a high quality Colloidal Silver . He found that a 9:1 ratio to a 20:1 ratio ( Colloidal Silver :bacteria ) was required to sharply and quickly reduce bacteria population counts. He found that a 1:1 ratio was effective only for a short period of time, whereby the bacteria would "overcome" the effects of the colloidal silver.
A 20:1 solution would eliminate the bacteria in under an hour. A 6:1 solution would do so in six hours. A 1:1 mixture would slightly drop the bacteria colony count for up to six hours, but would not significantly reduce this count even during the "effective" time frame.