Colloidal Silver is nothing more than a small amount of silver molecules suspended in water. A "colloid" consists of ultramicroscopic particles within the range of 0.004 to 0.015 microns in diameter. These particles stay suspended because they have a tiny charge placed on them produced by the electrocolloidal process. The particles are so small that the force of an electrical charge on the particles against the water molecules is greater than the pull of gravity. As a result the particles can stay in suspension at appropriate concentrations, almost indefinitely with no need for any chemicals or stabilizers. In a true "colloid" these particles are so ultra-fine that they cannot be seen by the naked eye. Colloidal Silver should have a concentration of three to twenty ppm (parts per million). Beware of products with higher concentrations. They can attack friendly bacteria the same way that some antibiotics do and this could upset your bodys' natural balance. Higher concentrations of Colloidal Silver are not necessarily better, in fact, the opposite is usually true. When purchasing Colloidal Silver, look for 99.999% Pure Colloidal Silver particles of less than 10 nanometers in diameter in a concentration of 9.2 ppm in deionized water. This is the optimal concentration suggested by health care professionals and researchers. Colloidal silver appears to be a powerful, natural antibiotic and preventative against infections. Acting as a catalyst, it reportedly disables the enzyme that one-celled bacteria, viruses and fungi need for their oxygen metabolism. They suffocate without corresponding harm occurring to human enzymes or parts of the human body chemistry. The result is the destruction of disease-causing organisms in the body and in the food. The presence of colloidal silver near a virus, fungus, bacterium or any other single celled pathogen disables its oxygen metabolism enzyme, its chemical lung, so to say. Within a few minutes, the pathogen suffocates and dies, and is cleared out of the body by the immune, lymphatic and elimination systems. Unlike pharmaceutical antibiotics, which destroy beneficial enzymes, colloidal silver leaves these tissue-cell enzymes intact, as they are radically different from the enzymes of primitive single-celled life. Thus colloidal silver is absolutely safe for humans, reptiles, plants and all multi-celled living matter.