They are nano size. There are videos on Youtube that can see the size of the nano-particulates. And more info on Spooky2 Colloidal Silver and Colloidal kit:
Spooky2 Colloidal Silver Generator Kit - Spooky Accessories
Colloidal Silver blog articles: http://bit.ly/21XJq6v
Colloidal Silver tutorial videos: Spooky2, silver - YouTube
Colloidal silver videos: http://bit.ly/2aVWR0h
For more details, please check:
2. The size of most of the Ag particles is in the range of 5 to 45 nm. I did some research on google but I don't think PWT could test colloidal silver.
We test our water for particles with a red or green laser. To test for PPM, it would be much too costly to invest in such testing equipment. Only large labs would be able to buy such.
We also go by testimonials of what has worked. You are welcome to join the Spooky2 Colloidal Silver FB group.
For more details, please check the link: