There is a lot of confusion about the difference between Ionic Silver and Colloidal Silver. The bottom is line the method used to processing the silver. All Ionic silver is made by electrolysis. Using two silver rods an electrical current is passed from the cathode (-) to the anode (+), through a medium of distilled water which is mineral free. The silver particle size varies with the current, temperature and purity of the water.
Since pure distilled water is not a very good conductor of electricity salt is sometimes added to increase the conductivity of the water and increase the electrical activity. This does produce Ionic silver, which is a silver molecule striped of an electron on the outer shell thereby making it very reactive and will now react with the sodium chloride (salt) producing silver chloride and other undesirable silver compounds.
The concentration of Ionic Silver is normally less than 50 parts per million, it is not stable and will clump together over time and precipitate out and fall to the bottom of the container as black silver rust.
True Colloidal Silver has a complete outer electron shell and is so stable that it can be frozen and still retain it's concentration of 10,000 parts per million and remain in suspension indefinitely.