Biophysica Incorporated

Phone: 416-784-0463 or Toll Free 1-800-488-2032 from Canada, US and Territories -or- E-mail:

Dr. Stewart. Concentration of Colloidal Silver Feb 2018

Welcome to my Blog,

Concentration:  I prefer to use CS for ingesting and for topical use at a concentration of 48-50 ppm. Using a 2 gallon container and 2“x 6“ electrodes over 48 hours, I get 1 ppm per hour.  For the highest quality smallest almost monoatomic nanoparticles, turn the nanometer size knob to the lowest level.

Conversion table percent to ppm

Percent (%)



1 ppm


10 ppm


100 ppm


1000 ppm


10000 ppm

1 percent = 10000 ppm

One ppm is equivalent to 1 milligram per liter of water (mg/l) or 1 microgram per ml

1ppm = 0.0001% So to convert from ppm to percent, divide the ppm by 10000

Our 50 ppm colloidal silver contains 50 micrograms per ml, so that a minimal daily requirement of silver or copper would be 10 ml which = one third of an ounce = 2 teaspoonfulls

One tablespoonful = 0.5 ounces = 15 ml

Dr. John Stewart


Category: Biophysica