A "Colloid" consists of indvidual particles within the range of 0.004 to 0.015 microns in diameter. Bion AgH20 molecules are comprised of indvidual atoms of silver with up to a million covalently bonded oxygen atoms. The size of the Bion Molecule is much smaller than 0.004 microns which does not fall within the classification of a colloid.
Colloidal Silver in its "best" form is comprised of clumps of 15 silver atoms per particle. These particles are too large to penetrate most cell membranes which dramatically limits Colloidal Silver's ability to assist the bodies immune system.
Bioactivity is rated as the amount of the positive charge held by a particle (molecule) which is the result of the presence of a greater number of protons than electrons in that molecule. The "best" form of a Colloidal Silver molecule has 15 more protons than electrons giving it a plus 15 rating i.e it can destroy fifteen bacteria /viruses etc. before loosing its bioactive properties.
Example: If you had two petri dishes that both contained 1,000,000 bacteria. In one you placed the best Colloidal Silver particle and the other you placed one Bion molecule. If the solution allowed the bioactive molecule to come into contact with each bacteria the Colloidal Silver would kill fifteen bacteria leaving 999,985 bacteria living. The Bion molecule would kill ALL one million bacteria completely sterilizing the dish.
