I think you may find Francis Key, who I believe is the founder of CSL, is also involved with a product called Purest Colloids, a vested interest, so don't rely on everything that is stated. He gave Ronald Gibbs a solution to test which was purported to be Colloidal Silver when in fact it was a predominately Ionic silver solution, the same product we make in our kitchens. If memory serves, unfortunately Gibbs died before he discovered this vital piece of information.
It's a good site you mentioned, but just don't totally rely or believe everything that is stated within. Francis Key to my knowledge is involved with his own product, which I believe is called 'Mesosilver'. Everyone has an agenda.