CS is Colloidal Silver.
There is a site that you can buy it at: www.gru.net/pwp/HISWAY4U/

also from Stan Deyo's site there is an article where you can purchase it, or instructions on how
to make your own - which saves dollars!
www.buddyebsen.com/standeyo/News_Files/Colloidal_Silver.html

Hope this helps.
Mother McInnis (another lurker).