Besides knowing that ionic silver, is the atomic structure that kills pathogens, and that the non ionic aka elemental cannot, it is important to realize that, yes, the grouping size of the atoms made by the systems is important because the research, and common sense, shows that the smaller the group size, the more possibilities to kill. DQ used the analogy of a billiard balls vs BBs or something like that in a post last year or so.
Each CS machine, due to what current and voltage used, and their relationship (less is better) makes a general size.
Only two companies have published TENS photos of their product, Silver Edge and Silver lungs. The difference between all the CS makers CS particulate groups can be from the smallest(most efficacious) at .08 Nanometer and the larger sized at up to 200 nanometers. Some retail CS has groups as large as 1000 nanometers. Clinical research shows that the cutoff is at about 50nm, where the smaller than 50nm size atom groups are very effective and larger than 50nm are largely ineffective.