Hi James, AgNP stands for silver nanoparticle.
AgNP dissociates oxygen molecules into individual atoms which diffuse throughout the atomic lattice structure of the silver particle. The silver particle literally carries atomic oxygen around until it meets a pathogen. Then, the activated oxygen fries the pathogen on contact. That's why it's important to keep those AgNP surfaces clean as possible. The addition of CS enhances the performance of sols, anti-biotics, and other apps, for sure, but some combinations I've seen hereabouts are not net positive. For further study, see below: https://www.nature.com/articles/ncomms12251
