rcombis
I make my own
Colloidal Silver and I can make anywhere from 1-25 ppm with my generator. I have a Hanna Pure Water Tester that gives me a close approximation.
A couple of things if you make your own. Only use distilled water and nothing else to make
Colloidal Silver . I repeat only use distilled water. DO not add any compounds because you are introducing other factors into the process which can create some unwanted results. I buy mine from the local health food store because it is steam distilled and it measures 0.0 on my Hanna PWT. The distilled water from walmart measured between 1.2 - 3.3 which is still ok but I would like to make the best stuff I can.
There are a lot of good email lists to join about
Colloidal Silver . There are people on these lists that have been making it for decades. I have been doing it for about a year with great results.
The three silver lists I belong to are colloidalsilver2@yahoogroups.com
silverdatawebsite@yahoogroups.com
silver-list@eskimo.com
good luck to you and send me an email if you have more questions, rcombis@yahoo.com. I have done a ton of research on CS and the process to make it because before I gave it to my family and friends I had to be sure