I suggest keeping it simple. ALL home generators work in exactly the same way.
You put 2 silver wires into a bottle filled with distilled water. You then apply a voltage potential across the silver electrodes. A current through the water begins flowing and strips silver ions off the silver wires. These are silver particles that are missing an electron.
As the number of ions build up in the water, the current flowing through the water increases. It keeps increasing until the current limit happens. Of course as the current increases and the ions in the water keeps increasing, the voltage potential across the terminals decreases. When a preset voltage is reached, the generator shuts off.
This preset voltage where the generator shuts off determines the Parts Per Million of silver ions in the water. 20ppm refers to 20 parts per million silver ions to water atoms. There are ONLY ions, and no particles, no colloids, no chemicals.
By definition 1 PPM is 1 milligram of silver deposited in 1 liter of water.... Ionic silver is conductive whereas Colloidal Silver is not. Colloids are like small ball bearings floating around in the water and separated from each other by what is called Brownian Motion. They carry no electrical charge. The ions are silver atoms missing one electron in the outer shell and therefore are positive in charge. The ionic portion is evenly dispersed like dissolved Sugar or salt.
Complete description of PPM: http://www.silvergen.com/ppm_vs_efficacy.htm
I suggest that you focus on reading only 1 expert to save your sanity. This expert is Steve Barwick. If Steve is not saying it, then don't read it.
I have never caught Steve in BS, lies or mumbo-jumbo and his research is 1st class. NO ONE ELSE can be trusted!